- a specialist or expert in grammar.
- a person who claims to establish or is reputed to have established standards of usage in a language.
- a person whose occupation is the study of grammar
- the author of a grammar
“student of or writer on (Latin) grammar; philologist, etymologist;” in general use, “learned man,” late 14c., from Old French gramairien (Modern French grammairien) “grammarian, wise man, person who knows Latin; magician,” agent noun from grammaire (see ).