noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any of various flatworms of the order Tricladida living in marine, freshwater, or terrestrial environments.
2. 2
   free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts wordnet

Synonyms

All synonyms

planariatricladtriclad

Example

More examples

"I found a land planarian in the garden."

Etymology

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

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.