Also called inscriptivism.
An inscription, in the relevant sense, is a word or phrase or sentence considered as written (or uttered) on some particular occasion.
Inscriptionism is any view making significant use of such inscriptions, considered as contrasted with abstract entities such as meanings which they might be thought to represent.
One might, for example, claim that to have a belief is to be suitably related to some particular sentence one has uttered (perhaps just to oneself) on some particular occasion. Inscriptionism is a form of reductionism, and claims the economy associated with that.
W V O Quine, Word and Object (1960), 214-15