Meanings
nounplanarian (plural planarians)
plural planarians
- Any of various flatworms of the order Tricladida living in marine, freshwater, or terrestrial environments.
Synonyms & antonyms
nounfree-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
Similar
Broader
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Latinplānum
- Late Latinplānārius“lying on a plane”
- translingualPlanaria
- Englishplanarian
From translingual Planaria (genus) (from Late Latin plānārius (“lying on a plane”), from Latin plānum) + -an.
More words from translingual, Late Latin, Latin
Full word history & related roots →Translations
French planaire
- planaireflatworm
German Planarie
- Planarieflatworm
Japanese プラナリア
- プラナリア (puranaria)flatworm
Portuguese planária
- planáriaflatworm
Spanish planaria
- planariaflatworm
Thai พลานาเรีย
- พลานาเรียflatworm
Rhymes & wordplay
Rhymes with planarian
BulgarianvegetarianhumanitarianlibrarianpresbyterianovarianlibertarianMarianunitarianDariensectarianagrariantotalitarianAryanvaleriancontrarianaquarianproletarianSumeriancaesareanarionDariantrinitarianBolivarian
All rhymes →Cite this entry
APA
planarian. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/planarian
MLA
“planarian.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/planarian. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “planarian,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/planarian.
Source: planarian on Wiktionary, CC BY-SA 4.0.