English Dictionary

vitellus

noun

(biology) The contents or substance of the ovum; egg yolk. / (botany) Perisperm in an early condition.

The vitellus is the nutrient-rich substance found in the ovum.

意味（1）

(biology) The contents or substance of the ovum; egg yolk.

In the sarcodo there takes place a process which may be in some measure compared with what occurs in the vitellus after the fecundation of an ovum. The granules becoming united together form groups, which soon divide and subdivide […]

意味（2）

(botany) Perisperm in an early condition.