Azollaceae
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～ used in some classifications for the genus Azolla
azores
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～ islands in the Atlantic Ocean belonging to Portugal; "the Azores are strategically located on transatlantic air and shipping routes"
azotaemia
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～ accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine
azote
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～ an obsolete name for nitrogen
azotemia
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～ accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine
azoturia
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～ excess of urea in the urine
azt
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～ an antiviral drug (trade name Retrovir) used in the treatment of AIDS; adverse side effects include liver damage and suppression of the bone marrow
aztec
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～ a member of the Nahuatl people who established an empire in Mexico that was overthrown by Cortes in 1519
aztecan
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～ the Uto-Aztecan language spoken by the Aztec
aztreonam
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～ an antibiotic (trade name Azactam) used against severe infections; has minimal side effects
azure aster
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～ a variety of aster
azure
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～ a light shade of blue
azurite
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～ blue carbonate of copper; blue malachite
azymia
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～ absence of an enzyme
B
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～ aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
B
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～ a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
b
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～ (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
B
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～ originally thought to be a single vitamin but now separated into several B vitamins
B
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～ a logarithmic unit of sound intensity equal to 10 decibels
B
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～ the blood group whose red cells carry the B antigen