Primary reaction


primary reaction n.
See vaccinia.

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  • Primary-root

    noun, Botany. 1. the first root produced by a germinating seed, developing from the radicle of the embryo. primary root The first root of a plant, originating in the embryo. In gymnosperms, eudicotyledons, and magnoliids, the primary root develops into the taproot. In monocotyledons, the primary root disintegrates as the lateral roots develop into a […]

  • Primary-school

    noun 1. a school usually covering the first three or four years of elementary school and sometimes kindergarten. 2. elementary school. primary school noun 1. (in Britain) a school for children below the age of 11. It is usually divided into an infant and a junior section 2. (in the US and Canada) a school […]

  • Primary-sex-characteristic

    noun, Anatomy. 1. any of the body structures directly concerned in reproduction, as the testes, ovaries, and external genitalia.

  • Primary-spermatocyte

    noun, Cell Biology. 1. See under spermatocyte. spermatocyte [spur-mat-uh-sahyt, spur-muh-tuh-] /spɜrˈmæt əˌsaɪt, ˈspɜr mə tə-/ noun, Cell Biology. 1. a male germ cell (primary spermatocyte) that gives rise by meiosis to a pair of haploid cells (secondary spermatocytes) that give rise in turn to spermatids. spermatocyte /ˈspɜːmətəʊˌsaɪt/ noun 1. (zoology) an immature male germ cell, […]

  • Primary storage

    main memory


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