/ Dictionary / Index L lactiferous: Meaning and Definition of Find definitions for: lac•tif•er•ous Pronunciation: (lak-tif'ur-us), [key] — adj. producing or secreting milk: lactiferous glands. conveying milk or a milky fluid: lactiferous ducts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lactic acid lacto- Related Content Daily Word Quiz: slough Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language