CANONICAL
Meaning of CANONICAL in English
ca ‧ non ‧ i ‧ cal /kəˈnɒnɪk ə l $ kəˈnɑː-/ BrE AmE adjective
1 . according to ↑ canon law
2 . technical in the simplest mathematical form
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012