# Mesoarchean

> English word · Adjective

## Definitions
1. Of a geologic era within the Archaean eon from about 3200 to 2800 million years ago; stromatolites have existed from this time.

## Etymology
From meso- + Archean.

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