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From The Collaborative International Dictionary of English v.0.48:
Ovule \O"vule\, n. [Dim. of L. ovum an egg: cf. F. ovule. Cf. Ovolo, Ovulum.] (Biol.) (a) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen. (b) An ovum. [1913 Webster]