/ Dictionary / Index L lactary: Meaning and Definition of Find definitions for: lac•ta•ry Pronunciation: (lak'tu-rē), [key] — adj. Archaic. of, pertaining to, or of the nature of milk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lactarian lactase 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