What is the term for a person who studies meaning of words?

A person who studies the meaning of words is called a semanticist. Semanticists are linguists or philosophers who specialize in the study of semantics, which is the branch of linguistics that deals with the relationship between language and meaning. Semanticists investigate how words and phrases are used and understood, and how they convey different shades of meaning in different contexts. They also explore the relationship between language and thought, and how language can influence our understanding of the world around us.