# galacto-

> English word · Prefix

## Definitions
1. Used to form medical and biochemical terms related to galactose
2. Used to form astronomical terms related to galaxies

## Etymology
From New Latin, from Ancient Greek stem γάλακτ- (gálakt-) of γάλα (gála, “milk, milky sap, the Milky Way”).

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