| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024val•id /ˈvælɪd/USA pronunciation adj. - sound; just;
well-founded:a valid argument. - having proper authority;
that can be used legally or properly;
authoritative:a valid driver's license. - legally sound, effective, or binding:a valid contract.
va•lid•i•ty /vəˈlɪdɪti/USA pronunciation n. [uncountable] val•id•ness, n. [uncountable]See -val-. WordReference Random House Unabridged Dictionary of American English © 2024val•id (val′id),USA pronunciation adj. - sound;
just;
well-founded:a valid reason. - producing the desired result;
effective:a valid antidote for gloom. - having force, weight, or cogency;
authoritative. - legally sound, effective, or binding;
having legal force:a valid contract. - Philosophy[Logic.](of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction.
- [Archaic.]robust;
well;
healthy.
- Latin validus strong, equivalent. to val(ēre) to be strong + -idus -id4
- 1565–75
- 3.See corresponding entry in Unabridged substantial, cogent.
- 5.See corresponding entry in Unabridged logical, convincing.
Collins Concise English Dictionary © HarperCollins Publishers:: valid /ˈvælɪd/ adj - having some foundation; based on truth
- legally acceptable: a valid licence
- having legal force; effective
- having legal authority; binding
- having some force or cogency: a valid point in a debate
- (of an inference or argument) having premises and conclusion so related that whenever the former are true the latter must also be true, esp (formally valid) when the inference is justified by the form of the premises and conclusion alone. Thus Tom is a bachelor; therefore Tom is unmarried is valid but not formally so, while today is hot and dry; therefore today is hot is formally valid
Compare invalid2 - archaic healthy or strong
Etymology: 16th Century: from Latin validus robust, from valēre to be strongˈvalidly adv validity /vəˈlɪdɪtɪ/, ˈvalidness n |