ab ‧ er ‧ ra ‧ tion /ˌæbəˈreɪʃ ə n/ BrE AmE noun [countable] formal
an action or event that is very different from what usually happens or what someone usually does:
a temporary aberration in US foreign policy
a mental aberration
ab ‧ er ‧ ra ‧ tion /ˌæbəˈreɪʃ ə n/ BrE AmE noun [countable] formal
an action or event that is very different from what usually happens or what someone usually does:
a temporary aberration in US foreign policy
a mental aberration
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012