Lactescent definitions Webster's 1828 Dictionary LACTES'CENT, a. 1. Producing ... milky. 2 yielding a milky juice. Webster's 1913 Dictionary Lactescent Lac*tes"cent, a. [L. lactescens, p. pr. of lactescere ... lactere to be milky, fr. lac, lactis, milk: cf. F. lactescent.] 1. Having a milky look; becoming milky. [Obs.] 2. (Bot ...