'angelologic' originates from Medieval Latin, specifically the word 'angelologia,' where 'angelus' meant 'angel' and '-logia' meant 'study of.'

'angelologia' transformed into the English word 'angelology,' and the adjective form 'angelologic' was derived from it in modern English.

Initially, it meant 'pertaining to the study of angels,' and this meaning has remained the same in modern usage.