Biology. The egg of a bird, fish, insect, etc.; the female gamete or reproductive cell in animals, usually produced by an ovary and capable of…
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| 单词 | θ18931 |
| 释义 | the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid (99) ovum1672 Biology. The egg of a bird, fish, insect, etc.; the female gamete or reproductive cell in animals, usually produced by an ovary and capable of… ovulum1698 Anatomy and Zoology. = ovum, n. 1a. Cf. ovule, n. 1a. Now historical and rare. ovule1762 Anatomy and Zoology. = ovum, n. 1a. Cf. ovulum, n. 1. Now rare. ovigerm1851 An (unfertilized) ovum. ovicell1869 Biology. An egg cell; an ovum. Obsolete. oosphere1875 A female gamete, esp. of an alga or fungus. ootid1898 A haploid cell formed by the meiotic division of a secondary oocyte; spec. an ovum, as distinct from a polar body. Subcategories:— ovocyte or oogonium (7) — types of ovum (7) — yolk (35) — white or albumen (9) — protoplasm or cytoplasm (3) — nucleus (2) — Graafian follicle, etc. (6) — polar body (2) — fertilized ovum and parts (15) — opening in (2) — stage of ovum (1) — zones of (3) |
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