gram-positive
adjective Date: 1907 holding the purple dye when stained by Gram's stain — used chiefly of bacteria

New Collegiate Dictionary. 2001.

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  • Gram-positive — bacteria retain the color of the crystal violet stain in the Gram stain. This is characteristic of bacteria that have a cell wall composed of a thick layer of a particular substance (called peptidologlycan). The Gram positive bacteria include… …   Medical dictionary

  • Gram-positive — [gram′päz′ə tiv] adj. [also g ] designating bacteria that retain the color stain: see GRAM S METHOD …   English World dictionary

  • Gram-positive — Bacillus cereus, lichtmikroskopisch, Gram Färbung: grampositiv Pseudomonas aeruginosa, lichtmikroskopisch, Gram Fä …   Deutsch Wikipedia

  • Gram-positive — Gram positif Les bactéries à Gram positif sont mises en évidence par une technique de coloration appelée coloration de Gram. Les bactéries à Gram positif apparaissent alors mauves au microscope. La technique de coloration repose sur les… …   Wikipédia en Français

  • Gram positive — Gram positif Les bactéries à Gram positif sont mises en évidence par une technique de coloration appelée coloration de Gram. Les bactéries à Gram positif apparaissent alors mauves au microscope. La technique de coloration repose sur les… …   Wikipédia en Français

  • Gram-positive — /gram poz i tiv/, adj. (often l.c.) (of bacteria) retaining the violet dye when stained by Gram s method. [1905 10; see GRAM S METHOD] * * * …   Universalium

  • Gram-positive — Gram′ pos′itive [[t]græm[/t]] adj. (often l.c.) mcr lab (of bacteria) retaining the violet dye when stained by Gram s method • Etymology: 1905–10 …   From formal English to slang

  • Gram-positive — adjective (of bacteria) being or relating to a bacterium that retains the violet stain used in Gram s method • Similar to: ↑positive, ↑confirming • Topics: ↑bacteria, ↑bacterium …   Useful english dictionary

  • gram-positive —   a. denoting a class of bacteria stainable by method invented by H. J. C. Gram,   Danish physician.    ♦ gram negative, a. denoting class of bacteria not stainable thus …   Dictionary of difficult words

  • gram-positive — adjective (of a bacterium) that is stained violet by Grams method Ant: gram negative …   Wiktionary

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