| 释义 |
cleidoic, a. Zool.|klaɪˈdəʊɪk|
[f. Gr. κλειδ-όω lock up (cf. κλειδ-, κλείς key) + -ic.]
Closed-up: used of an egg encased in a shell or membrane.
1931J. 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. Ibid., The history of the steps which led to the cleidoic egg is the history of eggs in general. 1935Nature 16 Mar. 413/2 The biological meaning of the numerous facts centring round the cleidoic egg. |