Ootid

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The haploid cell, produced by meiotic division of a secondary oocyte, that is a nearly mature ovum.

    "Beyond the last of the oocytes, toward the lumen, are found numerous closely packed ootids, which have small pronuclei and are less basophilic than the smaller oocytes, due to the accumulated yolk in the cytoplasm."

  2. 2
    mature ovum after penetration by sperm but before the formation of a zygote wordnet

Example

More examples

"Beyond the last of the oocytes, toward the lumen, are found numerous closely packed ootids, which have small pronuclei and are less basophilic than the smaller oocytes, due to the accumulated yolk in the cytoplasm."

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