What does compositional mean?
'Compositional' is an adjective describing anything that relates to the way parts are arranged into a whole. It is most at home in discussions of art, photography, and music, where a work's compositional qualities — balance, framing, harmony between elements — often determine its impact. The word carries a second, more technical sense in linguistics, logic, and computer science, where 'compositional' describes systems in which the meaning of a complex expression is built systematically from the meanings of its components; the 'principle of compositionality' is foundational to formal semantics. Derived ultimately from Latin roots meaning 'to place together', it belongs to the same family as 'compose' and 'composition'. Though formal in register, the word is precise and useful whenever the focus falls not on what a thing is made of, but on how those materials have been organised.
Relating to the arrangement or structure of parts within a whole, especially in works of art, music, or literature.
"Her compositional choices gave the photograph an almost architectural sense of order."
(Linguistics, logic) Relating to the property whereby the meaning of a complex expression is determined systematically by the meanings of its parts and the rules for combining them.
"A compositional account of meaning explains novel sentences without appealing to extra rules."
In philosophy of language, the 'principle of compositionality' holds that you can understand any sentence you've never heard before — simply by knowing what its parts mean and how they fit together.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of compositional
'Compositional' derives from 'composition', which entered English via Old French from the Latin 'compositio', formed from 'componere' — 'com-' (together) and 'ponere' (to place). The adjective form developed later to describe qualities pertaining to arrangement or structure. Its technical use in semantics was popularised in the twentieth century through the work of philosopher Gottlob Frege, whose principle that meaning is determined by parts and their combination came to be called the principle of compositionality.
Related word forms
How compositional is actually used
'Compositional' is largely a formal or technical word, common in art criticism, musicology, linguistics, and logic. It is rarely used in casual conversation. In everyday speech about art, people more often say 'in terms of composition' than use the adjective directly.
Easily confused with compositional
'Composition' is a noun referring to the thing created or the act of creating it, while 'compositional' is an adjective describing qualities relating to how something is arranged or put together.