Entry 1 sense Webster, 1913 Adopted /əd-äp'-tĭd/ · A·dopt·ed · IPA /əˈdɑptɪd/ 01 a. Taken by adoption; taken up as one's own; as, an adopted son, citizen, country, word. 1. Taken by adoption; taken up as one's own; as, an adopted son, citizen, country, word.