o·vule (  vy l,  vyl)n. 1. Botany A minute structure in seed plants, containing the embryo sac and surrounded by the nucellus, that develops into a seed after fertilization. 2. Zoology A small or immature ovum. [New Latin vulum, diminutive of Latin vum, egg; see awi- in Indo-European roots.]o vu·lar (vy -lr, vy-), ovu·lar y (-l r ) adj. |
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