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azobenzene an orange-red, nonsoluble crystalline compound obtained from nitrobenzene, used in organic synthesis, as an insecticide, and in the making of dyes.
azoic see Archean.
Aztec a member of an Indian people who had an advanced civilization in central Mexico before the Spaniards conquered them in 1519. [4 definitions]
azure the color of a clear blue sky; sky blue. [2 definitions]
azurite a bright azure-blue mineral that serves as a copper ore. [2 definitions]
azygous in biology, not being part of a pair; occurring singly.
B symbol of the chemical element boron.
B- in the U.S. military, a plane used to transport and drop bombs, such as a B-17 or B-52.
b the second letter of the English alphabet. [5 definitions]
b. abbreviation of "born," brought into life by birth or in like manner (used to indicate the year or date of a birth).
B-1 a heavy U.S. jet bomber built for the 1980s.
B-17 a four-engine U.S. bomber extensively used in World War II; Flying Fortress.
B-29 a heavy U.S. bomber used late in World War II; Superfortress.
B-52 a heavy U.S. bomber with eight jet engines.
Ba symbol of the chemical element barium.
B.A. abbreviation of "Bachelor of Arts," an undergraduate degree conferred on a person who has completed a curriculum in the liberal arts; A.B.
baa to make the sound of a sheep; bleat. [2 definitions]
Baal any of various local deities, usu. fertility gods, worshiped by certain ancient Semitic peoples. [2 definitions]
baba au rhum a light, porous cake, usu. made with yeast and sometimes containing raisins or other dried fruit, that is soaked with rum before serving.
Babbitt the title character and protagonist of Sinclair Lewis's early twentieth-century novel, who is smug, conventional, and resolutely middle-class. [2 definitions]
babbitt see Babbitt metal. [2 definitions]