# planarian

> English word · Noun · IPA /pləˈnɛə.ɹi.ən/

## Definitions
1. Any of various flatworms of the order Tricladida living in marine, freshwater, or terrestrial environments.

## Etymology
From translingual Planaria (genus) (from Late Latin plānārius (“lying on a plane”), from Latin plānum) + -an.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/planarian