lacto-


Also found in: Medical.

lacto-

(word root) milk
Examples of words with the root lacto-: lactoprotein
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree

lacto-

or lact-
pref.
1. Milk: lactoprotein.
2. Lactose: lactase.
3. Lactic acid: lactate.
[From Latin lac, lact-, milk; see melg- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

lacto-

or before a vowel

lact-

combining form
indicating milk: lactobacillus.
[from Latin lact-, lac milk]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

lacto-

a combining form meaning “milk” (lactometer) or “lactic acid” (lactobacillus). Also, lacti- ;esp. before a vowel, lact-.
[< Latin lact-, s. of lac milk + -o-]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Even if you aren't interested in becoming a semi-, lacto-, or any other type of vegetarian, you should eat more fruits and vegetables in order to reduce your risk of cancer.
The new vegetarianism

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