# opisthosoma

> English word · Noun

## Definitions
1. The posterior segment of the two-part body structure of chelicerates. Often used interchangeably with abdomen.

## Etymology
From opistho- + soma.

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