1813, "of or pertaining to the raising of plants or animals," from Latin cultura "tillage, a cultivating, agriculture," figuratively "care, culture, an honoring," from past participle stem of colere "to tend, guard; to till, cultivate" (see colony). With -al (1). Figurative senses of "relating to civilizations," also "the cultivation of the mind," are attested by 1875; hence, "relating to the culture of a particular place at a particular time" (by 1909).
Cultural anthropology is attested by 1910, and cultural has been a fertile starter-word among anthropologists and sociologists, for example cultural diffusion, in use by 1912; cultural diversity, by 1935; cultural imperialism, by 1937; cultural pluralism, by 1932; cultural relativism, by 1948. China's Cultural Revolution (1966) began in 1965; the name is a shortened translation of Chinese Wuchan Jieji Wenhua Da Geming "Proletarian Cultural Great Revolution."
"cross-fertilization, cross-breeding; act or process of hybridizing; state of being hybridized," 1824, noun of action from hybridize.
"of or pertaining to analysis of cultural phenomena from the inside," 1954, from phonemic.
acronym from United Nations Educational, Scientific and Cultural Organization, which was created in 1945.
in La Raza, literally "the race," 1964, from American Spanish (see race (n.2)), "designating the strong sense of racial and cultural identity held by Mexican-Americans" [OED].