Ovum O"vum ([=o]"v[u^]m), n.; pl. L. {Ova} ([=o]"v[.a]), E. {Ovums} ([=o]"v[u^]mz). [L., an egg. See {Oval}.] 1. (Biol.) A more or less spherical and transparent cell, which by a process of multiplication and growth develops into a mass of cells, constituting a new individual like the parent; an egg, spore, germ, or germ cell. See Illust. of {Mycropyle}. [1913 Webster]

Note: The ovum is a typical cell, with a cell wall, cell substance, nucleus, and nucleolus. In man and the higher animals the cell wall, a vertically striated membrane, is called the zona pellucida; the cell contents, the vitellus; the nucleus, the germinal vesicle; and the nucleolus, the germinal spot. The diameter of the ripe ovum in man and the domestic animals varies between 1-200 and 1-120 of an inch. [1913 Webster]

2. (Arch.) One of the series of egg-shaped ornaments into which the ovolo is often carved. --Gwilt. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • OVUM — Graece Ω᾿ὸν, quomodo generetur, facunde persequitur Plin. l. 10. c. 35. qui et de vitiis et remediis incubantium, c. seq. ubi et quaedam citra incubitum, sponte naturae gignere, ut in Aegypti fimetis; memorat: scitum de quodam potore, illum… …   Hofmann J. Lexicon universale

  • Ovum — das; s, Ōva <aus lat. ovum »Ei«> Ei, Eizelle (Med., Biol.) …   Das große Fremdwörterbuch

  • ovum — (n.) (pl. ova), 1706, from L. ovum egg, cognate with Gk. oon, O.N. egg, O.E. æg, all from PIE root *awi egg (see EGG (Cf. egg) (n.)) …   Etymology dictionary

  • ovum — ȏvum m DEFINICIJA biol. jaje ETIMOLOGIJA lat. ovum …   Hrvatski jezični portal

  • ovum — ovum. См. яйцеклетка. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Ovum — (lat.), ein Ei …   Pierer's Universal-Lexikon

  • Ovum — (lat., ovulum), Ei (s. d.); ovulum abortivum, Abortivei, s. Mole, S. 32 …   Meyers Großes Konversations-Lexikon

  • Ovum — ⇒ Eizelle …   Deutsch wörterbuch der biologie

  • Ovum — Ovum,das:⇨Ei(I,1),Keimzelle(1) …   Das Wörterbuch der Synonyme

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