verb (used with object), sur·ro·gat·ed, sur·ro·gat·ing.
Origin of surrogate
verb (ˈsʌrəˌɡeɪt) (tr)
Word Origin for surrogate
early 15c., from Latin surrogatus, past participle of surrogare "put in another's place, substitute," from sub "in the place of, under" + rogare "to ask, propose" (see rogation). Meaning "woman pregnant with the fertilized egg of another woman" is attested from 1978 (from 1972 of animals; surrogate mother in a psychological sense is from 1971).