lactescentEnglishOxford Dictionary of Englishlactescent /lakˈtɛsnt / ▸ adjective milky in appearance. ▪ Botany yielding a milky latex. – DERIVATIVES lactescence /lakˈtɛsn(t)s / noun– ORIGIN mid 17th century: from Latin lactescent- ‘being milky’, from the verb lactere, from lac, lact- ‘milk’.