Vitellus

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The contents or substance of the ovum; egg yolk. archaic, countable, uncountable

    "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 […]"

  2. 2
    nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg) wordnet
  3. 3
    Perisperm in an early condition. countable, uncountable
  4. 4
    An oily substance adhering to the spores of Lycopodium. countable, uncountable

Synonyms

All synonyms
albumenblastophorecaviareggegg whiteegg yolk

Example

More examples

"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 […]"

Etymology

From Latin vitellus (“the yolk of an egg”). Doublet of veal.

Related phrases

egg yolk

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.