Meaning of ABNORMAL in English

adj. 1 deviating from what is normal or usual; exceptional. 2 relating to or dealing with what is abnormal (abnormal psychology). abnormally adv.

[ earlier and F anormal, anomal f. Gk anomalos ANOMALOUS, assoc. with L abnormis: see ABNORMITY ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.