Word.ws English Dictionary

protostomata

protostomata is the plural of protostoma.

Meaning of protostoma

Noun

protostoma (plural protostomata)

  1. (obsolete) Synonym of blastopore.
    • It is frequently stated by critics of the protostoma hypothesis that it involves a reversal of dorsal and ventral sides during the evolution of Vertebrates from their invertebrate ancestors but it will be gathered from what has been said that this criticism rests on a misunderstanding.1919, Ernest William MacBride, Text-book of Embryology
    Synonyms:
    blastopore
  2. In nematodes, a particular division of the stoma (mouthlike opening).
    • The protostoma with its wall—the protorhabdion—is the major part of the stoma.1968, Konstantin Ivanovich Skirabin, Key to Parasitic Nematodes, volume 1

Questions about protostomata

What is protostomata the plural of?
Protostomata is the plural of protostoma.

Words near protostomata in the dictionary

  1. protosteliids
  2. protostellar
  3. protosteloid
  4. protostoma
  5. protostomal
  6. protostomata
  7. protostomatous
  8. protostome
  9. protostomes
  10. protostomian
  11. protostomians

Source and license

Adapted from Wiktionary: protostomata (page history and authors); protostoma (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “protostomata.” Word.ws, https://word.ws/protostomata. Based on Wiktionary, CC BY-SA 4.0.