c.1600, "gained by effort," past participle adjective from acquire. Of diseases, "occurring after birth, thus not dependent on heredity," 1842 (opposed to congenital). Acquired taste is attested from 1734.
mid-15c., acqueren, from Old French aquerre "acquire, gain, earn, procure," from Vulgar Latin *acquaerere, from Latin acquirere "to seek in addition to" (see acquisition). Reborrowed in current form from Latin c.1600. Related: Acquired; acquiring.
acquired ac·quired (ə-kwīrd')
adj.
Of or relating to a disease, condition, or characteristic that is not congenital but develops after birth.
Developed in response to an antigen, as resistance to a disease by vaccination or previous infection.