valid

adjective

Well grounded; just.

adjective

Producing the desired results; efficacious.

adjective

Having legal force; effective or binding.

adjective

Containing premises from which the conclusion may logically be derived.

adjective

Correctly inferred or deduced from a premise.

adjective

Of sound health; robust.

Strong: powerful; efficient.

Sufficiently supported by fact; well-grounded; sound; just; good: capable of being justified or defended; not weak or defective: as, a valid reason; a valid objection.

Good or sufficient in point of law; efficacious; executed with the proper formalities; incapable of being rightfully overthrown or set aside; sustainable and effective in law, as distinguished from that which exists or took place in fact or appearance, but has not the requisites to entitle it to be. recognized and enforced by law: as, a, valid deed; a valid covenant; a valid instrument of any kind; a valid claim or title; a valid marriage; a valid ordination.—4. In zoology and hot., having sufficient classificatory strength or force; scientifically founded or well-grounded; securely established: as, a valid family, genus, or species; & valid classification.