di ‧ ur ‧ nal /daɪˈɜːn ə l $ -ˈɜːr-/ BrE AmE adjective technical
[ Date: 1300-1400 ; Language: Latin ; Origin: diurnalis , from dies 'day' ]
1 . happening or active in the daytime OPP nocturnal
2 . happening every day
di ‧ ur ‧ nal /daɪˈɜːn ə l $ -ˈɜːr-/ BrE AmE adjective technical
[ Date: 1300-1400 ; Language: Latin ; Origin: diurnalis , from dies 'day' ]
1 . happening or active in the daytime OPP nocturnal
2 . happening every day
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012