validとは

形容詞

valid (comparative more valid, superlative most valid)

1. Well grounded or justifiable, pertinent.
   • 2012 March-April, Jan Sapp, “Race Finished”, in American Scientist‎^[1], volume 100, number 2, page 164:

     Few concepts are as emotionally charged as that of race. The word conjures up a mixture of associations—culture, ethnicity, genetics, subjugation, exclusion and persecution. But is the tragic history of efforts to define groups of people by race really a matter of the misuse of science, the abuse of a valid biological concept?

   I will believe him as soon as he offers a valid answer.

2. Acceptable, proper or correct.

   A valid format for the date is MM/DD/YY.

   Do not drive without a valid license.

3. Related to the current topic, or presented within context, relevant.
4. (logic) Of a formula or system: such that it evaluates to true regardless of the input values.
5. (logic) Of an argument: whose conclusion is always true whenever its premises are true.

   An argument is valid if and only if the set consisting of both (1) all of its premises and (2) the contradictory of its conclusion is inconsistent.

反意語

• invalid

下位語

• (in logic: argument whose conclusion is always true whenever its premises are all true): sound

関連する語

• validate
• validation
• validator

アナグラム

• Advil, davil