LACTIFEROUS Meaning of LACTIFEROUS in English [lac.tif.er.ous] adj [F or LL; F lactifere, fr. LL lactifer, fr. L lact-, lac + -fer] (ca. 1674) 1: yielding a milky juice "~ plants" 2: secreting or conveying milk Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012