Is semantics the major branch of linguistics which is devoted to study meaning in a language?

That's absolutely correct! Semantics is the branch of linguistics dedicated to the study of meaning in language. It investigates how words, phrases, and sentences convey meaning, and how that meaning is interpreted by listeners or readers.

Here are some key aspects of semantics:

* Word meaning: Examining the individual meanings of words, their relationships to each other (synonyms, antonyms, etc.), and how those meanings can change depending on context.

* Sentence meaning: Analyzing the meaning of entire sentences, considering the relationships between words and their grammatical structure.

* Conceptual meaning: Exploring the underlying concepts that words and sentences represent.

* Pragmatics: Investigating how context and speaker intention influence the interpretation of meaning.

So, yes, semantics is the major branch of linguistics focused on understanding how language creates and conveys meaning.