# mesoplanet

> English word · Noun

## Definitions
1. a planet that is between the size of Mercury and Ceres
2. A habitable planet, such as Earth, that has a surface temperature of 0–50°C, optimal for much terrestrial life.

## Etymology
From meso- + planet.

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