Meaning

noun someone who takes the place of another person

noun a person appointed to represent or act on behalf of others

adjective providing or receiving nurture or parental care though not related by blood or legal ties

originFrom Latin surrogātus, perfect passive participle of surrogō (“ask”); a variant of subrogō, from sub (“under”) + rogō (“ask”).

Etymology from Wiktionary, CC BY-SA 3.0