Putnam argues that the meaning of a word or sentence is determined by the context in which it is used, rather than by the speaker's intention, the definition of the word or sentence, or the mental representation of the word or sentence.

Putnam's view that the meaning of a word or sentence is determined by the context in which it is used is called contextualism.

Putnam's argument that the meaning of a word or sentence cannot be determined by the speaker's intention alone is called the Twin Earth Argument.

Putnam's argument that the meaning of a word or sentence cannot be determined by the definition of the word or sentence alone is called the Meaning Holism Argument.

Putnam's argument that the meaning of a word or sentence cannot be determined by the mental representation of the word or sentence alone is called the Externalism Argument.

Putnam's theory of reference is called the Causal Theory of Reference.

Putnam argues that language is a way of interacting with reality, rather than a mirror of reality, a tool for describing reality, or a way of creating reality.

Putnam's theory of meaning has a number of implications for the philosophy of language, including the fact that the meaning of words and sentences is not fixed, the meaning of words and sentences is context-dependent, and the meaning of words and sentences is intention-dependent.

Putnam's theory of meaning has been criticized for being too vague, too complex, and not falsifiable.

Putnam's theory of meaning has been significant in advancing the philosophy of language, influencing other areas of philosophy, and inspiring new research in linguistics.