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单词 cytode
释义

cytoden.

Brit. /ˈsʌɪtəʊd/, U.S. /ˈsaɪˌtoʊd/
Forms: 1800s cytod, 1800s– cytode.
Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: cyto- comb. form, -ode comb. form1.
Etymology: < cyto- comb. form + -ode comb. form1, after German Cytode ( E. Haeckel Gen. Morphol. der Organismen (1866) 270).
Biology.
1. Esp. in the terminology of Haeckel: a cell-like mass of protoplasm lacking a nucleus, believed to be the most primitive form of living organism. Now historical.
ΘΚΠ
the world > life > biology > organism > proto-organism > [noun]
monad1826
proto-organism1860
cytode1869
Protista1869
protist1873
ephemeromorph1874
protistan1890
1869 Q. Jrnl. Microsc. Sci. 9 223 It is identical with the substance which as Plasma or Protoplasm forms the contractile living substance of all organic Plastides; of all cells and Cytodes of animals, Protista, and plants.
1875 Encycl. Brit. I. 845/2 If they [sc. red blood corpuscles] are merely clumps of specially modified protoplasm, budded off from the white corpuscles, then they are cytodes.
1879 tr. E. Haeckel Evol. Man I. vi. 130 Cytods: living, independent existences which consist merely of an atom of plasm.
1916 Amer. Naturalist 50 116 With the formation of the nucleus the cytode or pseudo-moneral stage has become a true cell of the simplest type.
1938 Bot. Rev. 4 89 The first group of observations pictures the cell of bacteria as devoid of any structure suggesting a nucleus. It is in conformity with Haeckel's dogma about the existence of cytodes.
1965 Proc. Amer. Philos. Soc. 109 146/1 The Monera were cytodes and so, too, were all cells at the moment they underwent division.
2005 M. A. Di Gregorio From Here to Eternity i. vi. 211 table First stage: a naked cytode.
2. A leucocyte. Cf. cytoid n. Obsolete. rare.Apparently only attested in dictionaries or glossaries.
ΘΚΠ
the world > life > biology > substance > cell > types of cells > [noun] > phagocytic cells > leucocyte or lymphocyte
cytoid1850
leucocyte1870
cytode1883
macrophage1887
lymphocyte1890
memory cell1892
macrophagocyte1896
lymphoblast1909
thymocyte1929
siderophage1941
Sézary cells1953
1883 New Sydenham Soc. Lexicon Cytode,... Also applied to the lymph and lymphoid cells; called also Leucocytes.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).
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n.1869
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