What does compositionally mean?
Compositionally is an adverb meaning 'with respect to composition or structure'. It is used when discussing not what a thing is made of in substance, but how its parts are arranged and combined into a whole. A critic might say a painting succeeds compositionally, praising its balance and organisation rather than its subject matter. In linguistics and philosophy, the word carries a precise technical sense: an account of meaning is compositional when the meaning of a complex expression is systematically derived from the meanings of its parts and the rules for combining them — an idea central to modern formal semantics. The term also appears in computer science and artificial intelligence, where researchers speak of compositionally generalisable systems. Because of these specialised uses, compositionally belongs mainly to academic and professional registers rather than casual speech, but within those fields it is a standard and indispensable term for talking about structure as opposed to content.
adverbIn a way that relates to the composition or structure of something; with respect to how parts are combined to form a whole.
- With regard to composition or structure — describing how the parts of a work or system are arranged.
- (Linguistics/philosophy) In accordance with the principle that the meaning of a complex expression is determined by its parts and the rules used to combine them.
"The novel succeeds compositionally, even if its prose style is unremarkable."
"The film is striking compositionally, with every frame carefully balanced."
"The semantics of the language are defined compositionally: each operator's meaning depends only on its operands."
In linguistics, the principle that a sentence's meaning is built from its parts is called 'compositionality' — and Frege's version of it is so central that it's simply called the principle of compositionality.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of compositionally
Compositionally derives from 'composition', which comes from Latin compositio ('a putting together'), from componere ('to put together'), itself formed from com- ('together') and ponere ('to place'). The adjective 'compositional' arose in English by the early modern period, and the adverb 'compositionally' developed from it, gaining particular currency in twentieth-century linguistic and philosophical usage through the notion of compositional semantics.
Related word forms
How compositionally is actually used
A technical-sounding adverb found chiefly in academic writing — literary criticism, music analysis, linguistics, philosophy of language, and AI research. Rarely used in everyday conversation.
Easily confused with compositionally
Compositely means 'as a composite or combination', whereas compositionally means 'with respect to the arrangement of parts within a whole'.