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Definition of siphonoplax

siphonoplax

/saɪˈfɒnəplæks/
si · phon · o · plax
Plural:siphonoplaces
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siphonoplax Lexical Profile

• noun

1

A calcareous, chitinous, or horny plate or tubular extension at the posterior end of the shell in certain bivalve mollusks, functioning to protect the animal's siphons.

Example

"The malacologist carefully measured the siphonoplax of the boring bivalve to understand how it shields its vulnerable siphons from abrasive rock."

• Nearby Words

sion
sip
siphon
siphonoplax
sipper
sippy
sir

Word Origin & Etymology

Derived from Greek 'siphōn' (tube, pipe) and 'plax' (flat plate or tablet).

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Siphonoplax. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/siphonoplax
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