| ovuliferous | Bearing ovules (for example applied to scales in a megasporangiate cone in gymnosperms.) (09 Oct 1997) |
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| ovulist | <biology> A believer in the theory (called encasement theory), current during the last century, that the egg was the real animal germ, and that at the time of fecundation the spermatozoa simply gave the impetus which caused the unfolding of the egg, in which all generations were inclosed one within the other. Also called ovist. Source: Websters Dictionary (01 Mar 1998) |
| ovulite | A fossil egg. Origin: Ovum. Source: Websters Dictionary (01 Mar 1998) |
| ovulocyclic | Denoting any recurrent phenomenon associated with and occurring at a certain time within the ovulatory cycle, as, for example, ovulocyclic porphyria. (05 Mar 2000) |
| ovulocyclic porphyria | Acute episodic exacerbations of porphyria occurring in the premenstrual period. (05 Mar 2000) |
| ovulode | In plants, sterile structures on the placenta. (09 Oct 1997) |
| ovulum | Origin: NL. See Ovule. <biology> An ovule. Source: Websters Dictionary (01 Mar 1998) |
| ovum | 1. The female reproductive cell which, after fertilization, develops into a new member of the same species (von Baer, 1827), an egg. 2. The human ovum: a round cell about 0.1 mm. In diameter, produced in the ovary, where there is deposited around it a noncellular covering (oolemma, zona pellucida, zona radiata). It consists of protoplasm which contains some yolk, enclosed by a thin cell wall (vitelline membrane). There is a large nucleus (germinal vesicle), within which is a nucleolus (germinal spot). By extension, the word is also used to designate any early stage of the conceptus, when the embryo itself constitutes a tiny and insignificant part of the whole. (18 Nov 1997) |
| ovum implantation | Endometrial implantation of the blastocyst. (12 Dec 1998) |
| ovum implantation, delayed | Delay of embryonal development whereby the blastocyst remains in the uterine cavity for a variable period of time before attaching to the endometrium and continuing its development. (12 Dec 1998) |
| ovum transport | Transport of the ovum or zygote from the site of ovulation to the site of implantation. (12 Dec 1998) |