资料来源 : pyDict

有确实根据的,有效的,正当的,正确的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Valid \Val"id\, a. [F. valide, F. validus strong, from valere to
   be strong. See {Valiant}.]
   1. Strong; powerful; efficient. [Obs.] ``Perhaps more valid
      arms . . . may serve to better us.'' --Milton.

   2. 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.

   3. (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.

资料来源 : WordNet®

valid
     adj 1: well grounded in logic or truth or having legal force; "a
            valid inference"; "a valid argument"; "a valid
            contract"; "a valid license" [ant: {invalid}]
     2: still legally acceptable; "the license is still valid"

资料来源 : Free On-Line Dictionary of Computing

Valid
     
        A {dataflow} language.
     
        ["A List-Processing-Oriented Data Flow Machine Architecture",
        Makoto Amamiya et al, AFIPS NCC, June 1982, pp. 143-151].
     
        (1995-02-14)