Meaning of NULL in English

NULL

null /nʌl/ BrE AmE adjective

[ Date: 1500-1600 ; Language: Old French ; Origin: nul , from Latin nullus 'not any' ]

null and void law an agreement, contract etc that is null and void has no legal force SYN invalid :

The contract was declared null and void.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.