surrogate
This term describes a substitute that is not merely a replacement, but a functional proxy authorized to act on behalf of another. In legal and official contexts, it carries a connotation of delegated authority and formal responsibility, distinguishing it from a casual substitute.
In medical and scientific discourse, the adjective form refers to an indirect measure used when the primary outcome is difficult or impossible to track. This creates a technical nuance where the surrogate is a representative indicator rather than the actual object of study. In the context of reproduction, the term is highly specialized and carries significant legal and ethical weight, referring specifically to the gestational carrier in a contractual arrangement.
Meanings
A person who acts as a substitute for another in a specific role, often in a legal, official, or representative capacity.
The court appointed a surrogate to manage the estate of the deceased.
A woman who bears a child for another person or couple, typically through a legal agreement.
The couple decided to use a surrogate to start their family.
Serving as a substitute or proxy for something else, frequently used in scientific, medical, or experimental contexts.
Researchers used a surrogate marker to measure the effectiveness of the new drug.