/ Dictionary / Index L lactometer: Meaning and Definition of Find definitions for: lac•tom•e•ter Pronunciation: (lak-tom'i-tur), [key] — n. an instrument for determining the specific gravity of milk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lactogenic hormone lactone Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language