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Definition of planarian

planarian

/pləˈnɛr.i.ən/
pla · nar · i · an
Plural:planarians
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planarian Lexical Profile

planarian Game Scores & Validity

• noun

1

A free-living, non-parasitic flatworm belonging to the class Turbellaria, commonly found in freshwater ponds and streams worldwide, and extensively studied in biology for its remarkable ability to regenerate lost body parts.

Example

"In the biology laboratory, the students were fascinated to learn that a planarian cut in half could successfully regenerate into two complete organisms."

Synonyms
View all synonyms for planarian

• Rhymes for planarian

• Nearby Words

plain-bellied water snake
plains garter snake
plains zebra
planarian
plane
planer
planet

Word Origin & Etymology

Derived from New Latin 'Planaria' (a genus of flatworms, stemming from Latin 'planarius' meaning 'flat' or 'level') combined with the English suffix '-an'.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Planarian. In Wordmom Dictionary. Retrieved Oct 18, 2026, from https://wordmom.com/dictionary/planarian
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