English Dictionary
Define dictionary terms easily — search for "example", "dictionary", "language", or "word" in our powerful online English dictionary.
Define dictionary terms easily in our powerful online English dictionary.
Searching for...
No matching words found
Try a different search term or browse the dictionary
evidence, usually obtained from a pilot project, that an idea, plan or project is likely to succeed
The integration project took about three weeks from proof of concept to fully operational status.
The devices are just proofs of concept at this point.
