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galacto-

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  1. a combining form meaning “milk,” used in the formation of compound words: galactopoietic.
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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

British Dictionary definitions for galacto-

galacto-

before a vowel galact-

combining form
  1. milk or milkygalactometer
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Word Origin

from Greek galakt-, gala
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

galacto- in Medicine

galacto-

pref.
  1. Milk:galactotherapy.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.