valid Meaning, Definition & Usage

adjective well grounded in logic or truth or having legal force
- a valid inference
- a valid argument
- a valid contract
adjective satellite still legally acceptable
- the license is still valid

F. valide, F. validus strong, from valere to be strong. See Valiant.

Strong; powerful; efficient. Obs. "Perhaps more valid arms . . . may serve to better us." Milton.
Having sufficient strength or force; founded in truth; capable of being justified, defended, or supported; not weak or defective; sound; good; efficacious; as, a valid argument; a valid objection.
An answer that is open to no valid exception. I. Taylor.
(Law) Having legal strength or force; executed with the proper formalities; incapable of being rightfully overthrown or set aside; as, a valid deed; a valid covenant; a valid instrument of any kind; a valid claim or title; a valid marriage. Syn. -- Prevalent; available; efficacious; just; good; weighty; sufficient; sound; well-grounded.