# meiofauna

> English word · Noun

## Definitions
1. A group of marine or freshwater, typically benthic organisms that are intermediate in terms of size between macrofauna and microfauna, and which can pass through a 1 mm sieve, but are retained by a 45 μm sieve.

## Etymology
From meio- + fauna. Meio- is from Ancient Greek μεῖον (meîon, “less”).

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