Other forms: surrogates
A surrogate is somebody or something standing in for another. A surrogate mother, a surrogate for wealth, act as a surrogate.
In research a surrogate measure is a stand-in for what you actually want to know, which is useful and dangerous in equal parts. Surrogacy in the sense of carrying a child for somebody else is the meaning most people meet, and the law on it differs everywhere.
1nounsurrogateSomebody or something standing in for another.
“After her parents died, her aunt became a surrogate mother to her.”
surrogate is a substitute.
Latin surrogare means to choose as a substitute — sub, in place of, plus rogare, to ask or propose.
Latin
surrogātus
English, today
surrogate
Built from
From Latin surrogātus, perfect passive participle of surrogō (“to choose someone as a substitute”); a variant of subrogō, from sub (“under”) + rogō (“ask”).
Etymology from Wiktionary, CC BY-SA