- a combining form meaning “milk,” used in the formation of compound words: galactopoietic.
Also especially before a vowel, galact-.
Origin of galacto-
< Greek galakto-, combining form of galakt-, stem of gála milk
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
before a vowel galact-
- milk or milkygalactometer
from Greek galakt-, gala
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.