A person appointed to act for another; a deputy. The vice president served as a surrogate for the president during the meeting.
A woman who bears a child on behalf of another person or couple, typically via artificial insemination or embryo transfer. The couple was grateful to the surrogate who helped them start their family.
Something that serves as or is used as a substitute for another thing. Soy milk is often used as a surrogate for dairy milk in vegan recipes.
(Law, chiefly US) A judge having jurisdiction over probate matters and the administration of estates. The will was filed with the surrogate of New York County.