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vitellus |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Vitellus \Vi*tel"lus\, n. [L., the yolk of an egg.] 1. (Biol.) The contents or substance of the ovum; egg yolk. See Illust. of {Ovum}. 2. (Bot.) Perisperm in an early condition.
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