Acolhua (from the article "Texcoco") city built in the present-day Valley of Mexico by the Acolhuas, a pre-Columbian people of ...
acolyte (from Greek akolouthos, "server," "companion," or "follower"), in the Roman Catholic church, a person is ... [1 Related Articles]
Acoma (from the article "Ancestral Pueblo culture") ...boundaries of what are now the U.S. states of Arizona, New Mexico, Colorado, and Utah ...
Acoma Indian pueblo, Valencia county, west-central New Mexico, U.S. The pueblo lies 55 miles (89 km) ...
Acomys cilicicus (from the article "African spiny mouse") ...The Cairo spiny mouse has the most extensive distribution, extending from northern Africa to the ...
Aconcagua River river in central Chile. It rises in the northwestern foothills of Mount Aconcagua of the ...
Aconcagua, Mount mountain in Argentina. It is commonly regarded as the highest summit in the Western Hemisphere, ... [7 Related Articles]
aconitase (from the article "metabolism") ...to cis -aconitate in such a way that isocitrate is formed. It is probable that all ...
aconitate (from the article "metabolism") ...(i.e., a rearrangement of certain atoms comprising the molecule) to form isocitrate [39]. The reaction ...
aconite (from the article "aconite") any member of two genera of perennial herbs of the buttercup family (Ranunculaceae): Aconitum, consisting ...
aconitine (from the article "monkshood") A few species are cultivated in gardens, including A. henryi , A. carmichaelii , and A. uncinatum. ...
Aconquija, Sierra del (from the article "Tucuman") provincia (province), northwestern Argentina. The western fringe of the province is occupied ...
Acontius in Greek legend, a beautiful youth of the island of Ceos. During the festival of ...
Acontius, Jacobus advocate of religious toleration during the Reformation whose revolt took a more extreme form than ... [1 Related Articles]
Acorales the sweet flag order of flowering plants and the most basal lineage among the monocotyledons ...
acorn (from the article "oak") Acorns provide food for small game animals and are used to fatten swine and poultry. ...
acorn and nut weevil any of approximately 45 species of weevils in the family Curculionidae (order Coleoptera) that have ...
acorn weevil (from the article "acorn and nut weevil") any of approximately 45 species of weevils in the family Curculionidae (order Coleoptera) that have ...
acorn woodpecker (from the article "woodpecker") The acorn woodpecker (M. formicivorus ) is about 20 cm (8 inches) long ...
acorn worm any of the soft-bodied invertebrates of the class Enteropneusta, phylum Hemichordata. The front end of ... [3 Related Articles]
Acorus (from the article "Acorales") ...plants and the most basal lineage among the monocotyledons (monocots), which are characterized by having ...
acosmism in philosophy, the view that God is the sole and ultimate reality and that finite ... [1 Related Articles]
Acosta, Carlos (from the article "Performing Arts") ...toured with the title Elsinore ), based very loosely on the story of Hamlet. Other notable ...
Acosta, Joaquin Colombian scientist, historian, and statesman who sought to preserve knowledge of his country's early history.
Acosta, Jose de Jesuit theologian and missionary to the New World, chiefly known for his Historia natural y ...
Acosta, Uriel freethinking rationalist who became an example among Jews of one martyred by the intolerance of ... [1 Related Articles]
acouchy either of two species of South American rodents that resemble the small tropical-forest-dwelling hoofed animals ... [1 Related Articles]
acousmatics (from the article "Pythagoreanism") ..."something heard," viz., the esoteric teachings) and mathematikoi (Greek: mathematikos, "scientific"), may have occurred at ...
acoustic absorption (from the article "Absorption coefficients of common materials at several frequencies") In addition to the geometric decrease in intensity caused by the inverse square law, a ...
acoustic bridge (from the article "ear, human") ...an actual measurement of the acoustic impedance of the ear, representing the state of the ...
acoustic communication system (from the article "sonar") ...the target (such as a ship, submarine, or torpedo). Waveforms thus detected may be analyzed ...
acoustic emission (from the article "ultrasonics") Structural flaws in materials can also be studied by subjecting the materials to stress and ...
acoustic gas meter (from the article "gas meter") Acoustic gas meters measure the rate of gas flow by comparing the frequency shifts of ...
acoustic impedance absorption of sound in a medium, equal to the ratio of the sound pressure at ... [4 Related Articles]
acoustic interferometer device for measuring the velocity and absorption of sound waves in a gas or liquid. ...
acoustic microscope (from the article "microscope") In the early 1940s Soviet physicist Sergei Y. Sokolov proposed the use of ultrasound in ...
acoustic mine (from the article "mine") ...circuit in the other chamber to explode the mine. The pressure mine reacts only to ...
acoustic neuroma benign tumour on the vestibulocochlear nerve (also called acoustic nerve) near its point of entry ... [1 Related Articles]
acoustic ohm (from the article "sound") The unit of specific acoustic impedance is the pascal second per metre, often called the ...
acoustic scansion (from the article "scansion") ...eighth notes for unstressed syllables, quarter or half notes for stressed syllables, and musical rests ...
acoustic sensillum (from the article "nervous system") ...thousands of axons. Another example is the ear of a noctuid moth. Each ear is ...
acoustic suspension system (from the article "electromechanical transducer") ...horn, or other enclosure in order to separate the waves from the front and the ...
acoustic trauma physiological changes in the body caused by sound waves. Sound waves cause variations in pressure, ...
acoustical engineering (from the article "theatre") Much recent study has centred on the problem of acoustics in the ancient theatre. The ...
acoustical shadow (from the article "acoustics") Acoustic shadows, regions in which some frequency regions of sound are attenuated, can be caused ...
acoustico-lateralis system (from the article "mechanoreception") ...(the labyrinth) arise. The common embryologic origin and structural similarities of mature neuromasts and labyrinthine ...
acoustics the science concerned with the production, control, transmission, reception, and effects of sound. The term ... [11 Related Articles]
acquiescence (from the article "personality assessment") Much study has been given to the ways in which response sets and test-taking attitudes ...
acquired character in biology, modification in structure or function acquired by an organism during its life, caused ... [3 Related Articles]
acquired contemplation (from the article "Christianity") ...whether mystical contemplation was the goal of all Christians or a special grace offered only ...
acquired immunological tolerance (from the article "Burnet, Sir Macfarlane") Australian physician, immunologist, and virologist who, with Sir Peter Medawar, was awarded the 1960 Nobel ...
acquired megacolon (from the article "megacolon") massive enlargement and dilation of the large intestine (colon). The two main types of the ...
acquired ptosis (from the article "ptosis") Acquired ptosis has many potential causes, but it is usually due to age-related stretching or ...
acquired strabismus (from the article "strabismus") ...the causes undoubtedly have some genetic component. While congenital strabismus is more common in children ...
acquisition (from the article "memory") In the course of a typical day, humans receive a continuous stream of information from ...
acquittal in criminal law, acknowledgment by the court of the innocence of the defendant or defendants. ...
Acraeinae (from the article "lepidopteran") ...Morphinae are Neotropical, as are the highly distasteful, aposematic Heliconiinae and Ithomiinae that, with the ...
Acrasiales (from the article "Acrasieae") class name for cellular slime molds (division Myxomycophyta). The class contains a single order, Acrasiales, ...
Acrasieae class name for cellular slime molds (division Myxomycophyta). The class contains a single order, Acrasiales, ... [1 Related Articles]
Acre westernmost estado (state) of Brazil. Acre covers the southwesternmost part of Brazil's ... [1 Related Articles]
acre unit of land measurement in the British Imperial and United States Customary systems, equal to ... [2 Related Articles]
Acre River river, chiefly in western Brazil, rising on the Peruvian border, along which it continues eastward ... [1 Related Articles]
Acre, Plain of (from the article "Palestine") Coastal lowlands of varying widths front the Mediterranean. The most northerly is the Plain of ...
acriflavine dye obtained from coal tar, introduced as an antiseptic in 1912 by the German medical-research ...
Acrisius (from the article "Perseus") in Greek mythology, the slayer of the Gorgon Medusa and the rescuer of Andromeda from ...
Acrisol one of the 30 soil groups in the classification system of the Food and Agriculture ... [1 Related Articles]
acritarch (from the article "Cambrian Period") ...(0.8 inch) in diameter and were probably more than 1 metre (3.3 feet) in height. ...
acro (from the article "skiing") Freestyle skiing focuses on acrobatics and includes three events: acro, aerials, and moguls. Formerly known ...
acrobatics (Greek: "to walk on tip-toe," or "to climb up"), the specialized and ancient art of ... [3 Related Articles]
Acrobatidae (from the article "marsupial") ...Vombatidae (wombats) 3 species in 2 genera. Related to the koala (family Phascolarctidae). Family Acrobatidae (feathertail glider ...
acrocephalosyndactyly congenital malformation of the skeleton affecting the skull and limbs. The disorder most often is ... [2 Related Articles]
Acrochordoidae (from the article "snake") ...extinct, both from Mauritius. Maxilla divided into two elements, a condition unique among vertebrates. Pelvic ...
Acrocomia (from the article "palm") ...urens ), the nipa palm, and the gebang and talipot palms (Corypha elata and C. umbraculifera ). ...
acrocyanosis bluish discoloration of the hands caused by spasms in arterioles (small arteries) of the skin. ... [1 Related Articles]
acrodermatitis enteropathica (from the article "nutritional disease") ...of zinc, iron, and other minerals. Severe zinc deficiency has also been described in patients ...
acrodonty (from the article "lizard") The common mode of tooth implantation is pleurodonty, in which the teeth are fused to ...
acrodynia (from the article "mercury poisoning") ...or the long-term ingestion of calomel (mercurous chloride, a cathartic) may produce fever, rash, and ...
acrolein (from the article "aldehyde") As another example, the common name of CH2 &doublehorzbond;CHCHO, for which the IUPAC name is 2-propenal, ...
acrolith statue, especially ancient Greek, in which the trunk of the figure was of wood and ...
acromegaly growth and metabolic disorder characterized by enlargement of the skeletal extremities. It is the result ... [7 Related Articles]
acromion (from the article "scapula") ...spine, which divides the bone into two concave areas, the supraspinous and infraspinous fossae. The ...
Acromis sparsa (from the article "tortoise beetle") ...Some species have evolved strategies to counteract the low survival rate that results. Maternal guarding, ...
Acromobacter eurydice (from the article "beekeeping") European foulbrood is caused by a nonsporeforming bacterium, Streptococcus pluton, but Bacillus alvie and Acromobacter ...
acron (from the article "crustacean") At the front, or anterior end, of the body there is an unsegmented, presegmental region ...
acronym (from the article "abbreviation") The combination of the first syllables or letters of component words within phrases or within ...
acrophobia (from the article "diagnosis") ...person recognizes the fear as excessive or unreasonable but cannot control the anxiety associated with ...
acrophyll (from the article "fern") ...climbers that originate upon the ground and grow up tree trunks. In these the lower ...
Acropolis (from the article "Athens") ...guitar. The taverna signs are multilingual, and the ubiquitous kitchen chair is being replaced by ...
acropolis central, defensively oriented district in ancient Greek cities, located on the highest ground and containing ... [5 Related Articles]
Acropolis Museum (from the article "Athens") ...large-scale sculpture in gaily coloured, porous limestone, representing groups of lions bringing down bulls, and ...
Acropolites, George Byzantine scholar and statesman, the author of Chronike Syngraphe ("Written Chronicle"), a ... [2 Related Articles]
Acropora cervicornis (from the article "conservation") ...affected, with successive waves of disease propagating throughout the region in recent decades. The result ...
Acropora palmata (from the article "conservation") ...waves of disease propagating throughout the region in recent decades. The result has been large ...
acrorhagus (from the article "cnidarian") ...others, primarily those of their own species. When members of one clone encounter those of ...
acrosome (from the article "fertilization") The acrosome reaction of spermatozoa is a prerequisite for the association between a spermatozoon and ...
acrostic short verse composition, so constructed that the initial letters of the lines, taken consecutively, form ...
Acrostichum (from the article "fern") ...naked sori (i.e., without an indusium) are found in Polypodium . (4) An arrangement of large ...
acroterion in architecture, decorative pedestal for an ornament or statue placed atop the pediment of a ...
Acrotretida (from the article "lamp shells") ...surface apical, or located at the tip, in both valves; fleshy pedicle emerging between the ...
acrylic (from the article "industrial polymers, major") Acrylic is a generic term denoting derivatives of acrylic and methacrylic acid, including acrylic esters ...
acrylic compound any of a class of synthetic plastics, resins, and oils used to manufacture many products. ... [2 Related Articles]
acrylic fibre (from the article "industrial polymers, major") ...On the other hand, a copolymer containing PAN and 2 to 7 percent of a ...
acrylic painting painting executed in the medium of synthetic acrylic resins. Acrylics dry rapidly, serve as a ... [1 Related Articles]
acrylonitrile (from the article "chemical industry") Figure 3 also shows that acrylonitrile can be copolymerized with butadiene (roughly one-third acrylonitrile, two-thirds ...
acrylonitrile-butadiene-styrene (from the article "electroplating") While nonmetallic materials have been plated since the mid-19th century, a period of rapid growth ...
Act for the Regulation of Printing (from the article "Locke, John") ...and in assuring freedom of thought and expression. Locke himself drafted the arguments that his ...
Act in Restraint of Appeals to Rome (from the article "Cromwell, Thomas, Earl of Essex, Baron Cromwell of Okeham") ...the act against the payment by bishops of their first year's revenue to Rome. He ...
ACT New Zealand (from the article "New Zealand") ...and made policy concessions to the Greens (6) in return for a pledge from the ...
Act of Parliament clock weight-driven wall clock with a large wooden, painted or lacquered dial. More correctly, it is ...
Act Preserving the Privileges of Ambassadors (from the article "extraterritoriality") ...is likewise of long standing. When, for example, during the reign of Queen Anne of ...
Act Providing for the Organisation of the Department of the Secretary of State of Canada and for the Management of Indian and Ordnance Lands (from the article "Native American") ...the most momentous legal changes in the later 19th century included the creation of the ...
act Utilitarianism (from the article "Utilitarianism") ...and a rule is judged useful or not by the consequences of its general practice. ...
Acta (Latin: "Acts"), in ancient Rome, minutes of public business and gazette of political and social ... [3 Related Articles]
Actaeon in Greek mythology, son of the minor god Aristaeus and Autonoe (daughter of Cadmus, the ...
Actian Games (from the article "sports") ...the discus. The historian Livy writes of Greek athletes' appearing in Rome as early as ...
actin protein that is an important contributor to the contractile property of muscle and other cells. ... [13 Related Articles]
actin filament (from the article "cell") Actin is a globular protein that polymerizes (joins together many small molecules) to form long ...
acting the performing art in which movement, gesture, and intonation are used to realize a fictional ... [16 Related Articles]
actinic ultraviolet radiation (from the article "ultraviolet radiation") ...nm), far (200-100 nm), and extreme (below 100 nm). In biology, three conventional divisions have ...
actinide concept (from the article "Seaborg, Glenn T.") ...and placement of these and many heavier elements in the periodic table of the elements ...
actinide element any of a series of 15 consecutive chemical elements in the periodic table from actinium ... [1 Related Articles]
Actinidiaceae (from the article "Ericales") Actinidiaceae are usually shrubs, small trees, or lianas; they are largely tropical and especially abundant ...
actiniochrome (from the article "coloration") A relatively rare pigment, actiniochrome occurs in red or violet tentacle tips and in the ...
Actinistia (from the article "crossopterygian") The Actinistia, especially the family Coelacanthidae, unlike the Rhipidistia, have exhibited exceptional evolutionary stability. The ...
actinium (Ac), radioactive chemical element, in Group IIIb of the periodic table, atomic number 89. Actinium ... [1 Related Articles]
actinium series (from the article "actinium series") set of unstable heavy nuclei constituting one of the four radioactive series (q.v. ).FIGURE radioactive series
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