A mass of many cells; esp. = morula, n. 2a. Obsolete.
单词 | θ18053 |
释义 | the world > life > biology > substance > cell > [noun] > mass or group of (7) polyblast1873 A mass of many cells; esp. = morula, n. 2a. Obsolete. tetrad1876 In spec. uses. Biology (a) A group of four cells, e.g. spores, pollen-grains. (b) A group of four chromosomes formed by the division of a single… triad1876 Specific uses. Biology (a) A group of three cells, e.g. spores. (b) A tertiary unit of organization consisting of an aggregate of dyads: cf. dyad, n.… tetrad-deme1883 an aggregation of tetrads: see 2b (b) and deme, n.2 2. stem-line1892 (a) the upright line (edge of a tablet, etc.) on which the strokes forming the Ogham alphabet are set; (b) a line of genealogical descent; (c) (ste… paraganglion1907 Any of the small aggregates of chromaffin cells found in association with autonomic ganglia and nerves. Also: any of the small collections of glomus… polyclone1975 A clone of cells derived from an initial small group of different parent cells. |
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