释义 |
ootidenUK
o·o·tid O0086200 (ō′ə-tĭd′)n. A haploid cell that results from the meiotic division of an oocyte and becomes a female gamete or an ovum. [oo- + (sperma)tid.]ootid (ˈəʊətɪd) n (Biology) zoology an immature female gamete that develops into an ovum[C20: from oo- + (sperma)tid]o•o•tid (ˈoʊ ə tɪd) n. an ovarian egg cell that results from oocyte division and matures into an ovum under certain conditions. [1905–10] ThesaurusNoun | 1. | ootid - mature ovum after penetration by sperm but before the formation of a zygoteegg cell, ovum - the female reproductive cell; the female gamete |
ootidenUK
ootid [o´o-tid] a mature oocyte (ovum); the cell produced by meiotic division of a secondary oocyte. In mammals, this second maturation division is not completed unless fertilization occurs.o·o·tid (ō'ō-tid), The nearly mature oocyte after the first meiotic division has been completed and the second initiated; in most higher mammals, including humans, the second meiotic division is not completed unless fertilization occurs. Thereafter the ootid contains two separate haploid elements, the female and male pronuclei. When the pronuclei fuse, the ootid becomes a zygote. [G. ōotidion, a diminutive egg. See -id (2)] ootid (ō′ə-tĭd′)n. A haploid cell that results from the meiotic division of an oocyte and becomes a female gamete or an ovum.o·o·tid (ō'ŏ-tid) The nearly mature oocyte after the first meiotic division has been completed and the second initiated; in most higher mammals (including humans), the second meiotic division is not completed unless fertilization occurs. [G. ōotidion, a diminutive egg. See -id (2)]ootidenUK
Words related to ootidnoun mature ovum after penetration by sperm but before the formation of a zygoteRelated Words |