Exact historical dictionary sense
Prove in Webster's 1913 dictionary
The 1913 record labels prove as verb. Its source-bounded etymology and selected historical definition appear below.
[OE. prover, F. prouver, fr. L. probare to try, approve, prove, fr. probus good, proper. Cf. Probable, Proof, Probe.]
Cross-verified historical senseIn Webster's Revised Unabridged Dictionary (1913), "prove" is labeled verb. Its etymology is recorded as: "[OE. prover, F. prouver, fr. L. probare to try, approve, prove, fr. probus good, proper. Cf. Probable, Proof, Probe.]" The selected historical definition says: "To try or to ascertain by an experiment, or by a test or standard; to test; as, to prove the strength of gunpowder or of ordnance; to prove the contents of a vessel by a standard measure."