Semantic Authority
noun

Definition:
A content source’s perceived topical expertise and trustworthiness as determined by its use of well-linked, semantically rich, and contextually relevant language. Semantic authority influences how both search engines and LLMs weigh and retrieve content for a specific domain or subject.

Usage:
“Despite fewer backlinks, the site ranked well due to strong semantic authority around nutritional science.”

Compare:
Topical Authority, E-E-A-T, Entity Salience