Meaning of BOOLEAN in English

BOOLEAN

Boo·le·an /ˈbuːliən/ BrE AmE adjective [only before noun] technical

a Boolean system is based on things that can be either true or false, but not both. It links statements with words called ↑ operator s , such as AND, OR, and NOT. Boolean systems are used to write computer programs, especially Internet search programs:

The program searches for information using Boolean logic.

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