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单词 cleidoic
释义

cleidoicadj.

/klʌɪˈdəʊɪk/
Etymology: < Greek κλειδ-όω lock up (compare κλειδ-, κλείς key) + -ic suffix.
Zoology.
Closed-up: used of an egg encased in a shell or membrane.
ΘΚΠ
the world > animals > animal body > general parts > sexual organs and reproduction > [adjective] > of egg encased in shell
cleidoic1931
1931 J. Needham Chem. Embryol. III. 1615 The avian egg is thus, in the strictest sense of the word, a closed box, with walls which can only be penetrated by matter in the gaseous state. The term ‘cleidoic’..is suggested for this state of affairs.
1931 J. Needham Chem. Embryol. III. 1615 The history of the steps which led to the cleidoic egg is the history of eggs in general.
1935 Nature 16 Mar. 413/2 The biological meaning of the numerous facts centring round the cleidoic egg.
This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).
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adj.1931
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