An example of the use of the word surrogate as an adjective is in the phrase "surrogate teacher" which means a substitute teacher.
An example of to surrogate is to act as the birth mother for a friend.
An example of a surrogate is a woman who gives birth to a baby, but gives the baby to another family.
Origin of surrogate
- Middle English from Latin surrogātus past participle of surrogāre to substitute variant of subrogāre subrogate
From American Heritage Dictionary of the English Language, 5th Edition