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单词 plasmogen
释义

plasmogenn.

Origin: Formed within English, by compounding. Etymons: plasmo- comb. form, -gen comb. form.
Etymology: < plasmo- comb. form + -gen comb. form. N.E.D.(1906) gives the pronunciation as (plæ·zmodʒen) /ˈplæzməʊdʒɛn/.
Biology. Obsolete. rare.
Lankester's term for: a hypothetical complex organic compound present in cytoplasm, of which other compounds in cytoplasm were supposed to be components or precursors.
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the world > life > biology > substance > cell > cell substance > [noun] > protoplasm or cytoplasm
biogen1848
protoplasm1848
protoplast1851
matrix1854
cytoplasm1857
plasma1863
bioplasm1869
plasmogen1888
morphoplasm1893
periplasm1925
1888 E. R. Lankester in Encycl. Brit. XXIV. 817/1 Physiologists have come to use the word ‘protoplasm’ for one of the chemical substances of which Schultze's protoplasm is a structural mixture—namely, that highest point in the chemical elaboration of the molecule which is attained within the protoplasm, and up to which some of the chemical bodies present are tending... This ‘critical’ substance, sometimes called ‘true protoplasm’, should assuredly be recognized by a distinct name ‘plasmogen’.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online June 2018).
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n.1888
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