proof-of-concept
UK[ˌpruːf əv ˈkɒnsept]US[ˌpruːf əv ˈkɑːnsept]
n
A demonstration, often on a small scale, to verify that a concept, theory, or method is feasible and works in practice.
Morpheme Breakdown
proof
of
concept
proof
of
concept
Etymology
The compound term "proof-of-concept" is a modern English formation from the mid-20th century, created within technical and business contexts. It logically combines three fundamental English words: "proof," meaning evidence or demonstration; the linking preposition "of"; and "concept," meaning an idea or theory. The phrase's literal meaning, "evidence of an idea," perfectly captures its function: it is a practical test designed to provide concrete evidence that a theoretical concept is viable before significant resources are committed to full development. This transparent construction reflects the analytical and pragmatic nature of technical English, where clarity and functional logic are prioritized over classical roots.
Analysis
Structure: proof + of + concept
- proof: From Middle English 'profe', from Old French 'prueve', from Late Latin 'proba' (a test, proof), from Latin 'probare' (to test, prove). In this compound, it functions as a noun meaning evidence or demonstration.
- of: From Old English 'of', a preposition indicating origin, source, or connection. In this phrase, it functions as a linking preposition.
- concept: From Latin 'conceptum' (something conceived), from 'concipere' (to take in, conceive). In this compound, it functions as a noun meaning an abstract idea or principle.
Examples
The team built a simple proof-of-concept to validate the core algorithm before seeking funding.
A successful proof-of-concept is often the first major milestone in a new research and development project.
The prototype served as a convincing proof-of-concept, demonstrating the device's potential for real-world application.