Valid vs Valis - What's the difference?

valid | valis |

As an adjective valid

is valid.

As a noun valis is





(en adjective)
  • Well grounded or justifiable, pertinent.
  • *{{quote-magazine, year=2012, month=March-April
  • , author=(Jan Sapp) , title=Race Finished , volume=100, issue=2, page=164 , magazine=(American Scientist) citation , passage=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.
  • Acceptable, proper or correct.
  • A valid format for the date is MM/DD/YY.
    Do not drive without a valid license.
  • Related to the current topic, or presented within context, relevant.
  • (logic) Of a formula or system: such that it evaluates to true regardless of the input values.
  • (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.


    * invalid


    * sound




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