the branch of linguistics that deals with the study of meaning, changes in meaning, and the principles that govern the relationship between sentences or words and their meanings
2.
the study of the relationships between signs and symbols and what they represent
3. logic
a.
the study of interpretations of a formal theory
b.
the study of the relationship between the structure of a theory and its subject matter
c.
(of a formal theory) the principles that determine the truth or falsehood of sentences within the theory, and the references of its terms