lacto-

a combining form meaning “milk,” used in the formation of compound words (lactometer); specialized in chemical terminology to mean “lactate,” or “lactic acid.”
Also lacti-; especially before a vowel, lact-.

Origin of lacto-

< Latin lact- (stem of lac milk) + -o-

Words nearby lacto-

lactifuge, lactigenous, lactigerous, lactim, lactivist, lacto-, lacto-ovo-vegetarian, lacto-vegetarian, lactobacillus, lactocele, lactoferrin

British Dictionary definitions for lacto-

lacto-

before a vowel lact-

combining form

indicating milk lactobacillus

Word Origin for lacto-

from Latin lact-, lac milk

Medical definitions for lacto-

lacto-

pref.

Milk:lactoglobulin.
Lactose:lactase.
Lactic acid:lactate.