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more about chalaza
chalaza |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Chalaza \Cha*la"za\, n.; pl E. {Chalazas}, L. {Chalaz[ae]}. [NL., fr Gr ? hail, pimple.] 1. (Bot.) The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus. 2. (Biol.) A spiral band of thickened albuminous substance which exists in the white of the bird's egg, and serves to maintain the yolk in its position; the treadle. From WordNet r 1.6 [wn]: chalaza n 1: basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined 2: one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell
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