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Definition of Abnormal

Babylon English

unusual, not normal; irregular, exceptional
Abnormal Definition from Arts & Humanities Dictionaries & Glossaries
Glossary of Stamp Collecting Terms
Nickname for stamps produced by De La Rue for Great Britain, 1862-80 from plates which were not put into production.
Abnormal Definition from Language, Idioms & Slang Dictionaries & Glossaries
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.
Concise English-Irish Dictionary v. 1.1
neamhchuibheasach, mínormálta
English Phonetics
The Devil's Dictionary
Abnormal, (adj.)

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)
WordNet 2.0

1. not normal; not typical or usual or regular or conforming to a norm; "abnormal powers of concentration"; "abnormal amounts of rain"; "abnormal circumstances"; "an abnormal interest in food"
(antonym) normal
(similar) aberrant, deviant
(see-also) insane
(attribute) normality, normalcy
2. departing from the normal in e.g. intelligence and development; "they were heartbroken when they learned their child was abnormal"; "an abnormal personality"
(antonym) normal
(similar) exceptional(a)
(classification) psychology, psychological science
3. much greater than the normal; "abnormal profits"; "abnormal ambition"
(similar) immoderate
Abnormal Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
Abnormality (or dysfunctional behavior), in the vivid sense of something deviating from the normal or differing from the typical (such as an ), is a subjectively defined behavioral characteristic, assigned to those with rare or dysfunctional conditions. Behavior is considered abnormal when it is atypical, out of the ordinary, causes some kind of impairment, or consists of undesirable behavior. Who is normal or abnormal is a contentious issue in abnormal psychology.

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Abnormal Definition from Entertainment & Music Dictionaries & Glossaries
English to Federation-Standard Golic Vulcan
Abnormal Definition from Medicine Dictionaries & Glossaries
NCI Dictionary of Cancer Terms
Not normal. An abnormal lesion or growth may be cancerous, premalignant (likely to become cancer), or benign. 
A Service of the National Cancer Institute.
Dictionary of Medicine (Shahram)
not normal
abnormal behaviour = conduct which is different from the way normal people behave
abnormal motion or abnormal stool = faeces which are different in colour, which are very liquid
Hepatitis Central (TM) Liver Disease Medical Glossary
Not normal; contrary to the usual structure, behavior, condition, position, or rule. Vikki