|Origin:||valide, from Latin validus 'strong, effective', from valere; VALOR|
a valid ticket, document, or agreement is legally or officially acceptable [≠ invalid]:
a valid credit card
Your return ticket is valid for three months.
a reason, argument etc that is based on what is reasonable or sensible:
Police officers must have a valid reason for stopping motorists.
a valid password, ID etc is one that will be accepted by a computer system [≠ invalid]
—validity noun [uncountable]
I would question the validity of that statement.