a combining form meaning “milk,” used in the formation of compound words (lactometer); specialized in chemical terminology to mean “lactate,” or “lactic acid.”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use lacto- in a sentence
The lacto-phosphate may be given in combination with cod-liver oil.
Finally, add the rest of the solution of the lacto-phosphate of lime, and mix thoroughly.
I am very92 sure the farmer who chooses this lacto-vegetarian diet will thrive on it.How to Eat | Thomas Clark Hinkle
But rendered freely, it reads: morishille's voozy, with lacto-ecto added for a new taste sensation.One Man's Poison | Robert Sheckley
In Walther's lacto-fermentator samples of milk are simply allowed to stand in bottles or glass jars until they sour.Outlines of Dairy Bacteriology, 8th edition | H. L. Russell
British Dictionary definitions for lacto-
indicating milk: lactobacillus
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