单词 | monoplast |
释义 | † monoplastn. Biology. Obsolete. A unicellular organism; an ovum. Also: any of the particles of which cellular protoplasm is supposedly composed (rare). ΘΚΠ the world > life > biology > organism > organisms by number or kind of cells > [noun] Euglena1858 monoplast1877 polyplastid1884 homoplastide1889 monoplastid1889 diploid1908 1877 E. R. Lankester in Q. Jrnl. Microsc. Sci. 17 403 The Monoplast = Ovum. 1887 Proc. Boston Soc. Nat. Hist. 23 397 The stages of holoblastic ova may be..classified as follows..(1) The ovum or Monoplast..; (2) the first stage of segmentation..; (3) the second stage of segmentation... We have proposed to classify these stages under the name of Protembryo. 1927–9 H. Wheeler Waverley Children's Dict. V. 2822/2 Monoplast,..a creature consisting of a single cell. Derivatives monoplastic adj. ΘΚΠ the world > life > biology > organism > organisms by number or kind of cells > [adjective] monocellular1854 multicellular1857 unicellular1858 monoplastic1877 unicelled1877 multicelled1884 acellular1886 monoplastid1889 tricellular1891 single-celled1899 mixed-celled1908 microcellular1909 1877 E. R. Lankester in Q. Jrnl. Microsc. Sci. 17 403 The monoplastic phase of individual development. 1927–9 H. Wheeler Waverley Children's Dict. V. 2822/2 A monoplastic..organism is a single-celled one. This entry has been updated (OED Third Edition, December 2002; most recently modified version published online June 2018). < |
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