a dark red, amorphous, water-insoluble powder, C 16 H 16 O 5 , obtained from the root of the alkanet: used chiefly for coloring fats, oils, and pharmaceuticals.

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  • Alkapton

    . alkapton al·kap·ton or al·cap·ton (āl-kāp’tŏn’, -tən) n. See homogentisic acid.

  • Alkaptonuria

    excessive excretion of homogentisic acid in the urine, caused by a hereditary abnormality of the metabolism of tyrosine and phenylalanine. alkaptonuria al·kap·to·nu·ri·a or al·cap·to·nu·ri·a (āl-kāp’tə-nur’ē-ə, -nyur’-) n. An inherited disorder that affects phenylalanine and tyrosine metabolism and leads to the excretion of homogentisic acid in the urine. Also called homogentisuria.

  • Alkekengi

    the winter cherry plant or fruit. Historical Examples Egg plants, tomatoes and peppers grew upon the European husk tomato or alkekengi (Physalis alkekengi). Scientific American Supplement, No. 795, March 28, 1891 Various For example, take the Physalis alkekengi, a member of the Nightshade family or Solanace. Everyday Objects W. H. Davenport Adams

  • Alkene

    any member of the . noun Also called olefine, olefin. any unsaturated aliphatic hydrocarbon with the general formula CnH2n Also called olefine. (as modifier): alkene series alkene al·kene (āl’kēn’) n. Any of a series of unsaturated, open chain hydrocarbons with one or more carbon-carbon double bonds, having the general formula CnH2n. alkene (āl’kēn’) Any of […]

  • Alkene series

    the homologous series of unsaturated, aliphatic hydrocarbons containing one double bond and having the general formula C n H 2n , as ethylene, H 2 C=CH 2 .

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