Webster's Revised Unabridged Dictionary (1913)
Not conformed to rule or system; deviating from the type; anomalous; irregular.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version
\ab*nor"mal\ (&?;), a. [for earlier anormal.f. anormal, ll. anormalus for anomalus, gr. &?;. confused with l. abnormis. see anomalous, abnormous, anormal.] not conformed to rule or system; deviating from the type; anomalous; irregular. "that deviating from the type; anomalous; irregular. "
for Vocabulary Exams of KPDS, YDS,UDS (in Turkey); and SAT in America
Not conformed to the ordinary rule or standard.
The Devil's Dictionary
Not conforming to standard. In matters of thought and conduct, to be independent is to be abnormal, to be abnormal is to be detested. Wherefore the lexicographer adviseth a striving toward the straiter [sic] resemblance of the Average Man than he hath to himself. Whoso attaineth thereto shall have peace, the prospect of death and the hope of Hell.
The Devil's Dictionary, by Ambrose Bierce, 1911 (About