# plesiomorph

> English word · Noun

## Definitions
1. An organism which represents a primitive state of evolution relative to another organism.

## Etymology
From plesio- + -morph.

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