Word Pronunciation & Dictionary

protostoma

Word Rarity Very rare

Frequency: Zipf frequency 0.00 in modern English

Syllables: pro-to-stoma
IPA

14

Scrabble Score

10

Letters

3

Syllables

7

Unique Chars

Meaning

noun

Synonym of blastopore.

Obsolete

noun

In nematodes, a particular division of the stoma (mouthlike opening).

Example Sentences

"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."
"The opening of this, the protostoma, becomes elongated, taking on an elliptical shape, and then it narrows in the middle, its outline becoming that of a dumb-bell."
"The protostoma with its wall—the protorhabdion—is the major part of the stoma."
"Conventionally, the stoma is divided into three parts: the anterior chamber or cheilostoma, the middle or protostoma, and the posterior or telostoma."

Etymology

From proto- + Ancient Greek στόμα (stóma, “mouth”).

Usage

Obsolete

Inflected Forms

protostomata (plural)

Derived Forms

protostomal

Frequently Paired Words

protostome

Synonyms

blastopore

Questions

What does protostoma mean?: Synonym of blastopore.
Where does protostoma come from?: From proto- + Ancient Greek στόμα (stóma, “mouth”).

How to pronounce protostoma

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