Meaning of BOOLEAN in English
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. 2012