WordReference Random House Learner's Dictionary of American English © 2017
ab•nor•mal /æbˈnɔrməl/USA pronunciation   adj. 
  1. not normal or usual:His wild behavior that day was clearly abnormal.
ab•nor•mal•i•ty /ˌæbnɔrˈmælɪti/USA pronunciation  n.  [countable], pl.  -ties. 
ab•nor•mal•ly, adv. See -norm-.

WordReference Random House Unabridged Dictionary of American English © 2017
ab•nor•mal  (ab nôrməl),USA pronunciation adj. 
  1. not normal, average, typical, or usual;
    deviating from a standard:abnormal powers of concentration;an abnormal amount of snow;abnormal behavior.
  2. extremely or excessively large:abnormal profit.
ab•normal•ly, adv. 
ab•normal•ness, n. 
  • Medieval Latin anōrmālus, variant of anōmālus anomalous influenced by Latin norma norm
  • 1850–55; ab- + normal; replacing anormal
    • 1.See corresponding entry in Unabridged anomalous, aberrant, irregular, deviant, unnatural, odd. See  irregular. 


Collins Concise English Dictionary © HarperCollins Publishers::

abnormal /æbˈnɔːməl/ adj
  1. not normal; deviating from the usual or typical; extraordinary
  2. informal odd in behaviour or appearance; strange
Etymology: 19th Century: ab-1 + normal, replacing earlier anormal from Medieval Latin anormalus, a blend of Late Latin anōmalus anomalous + Latin abnormis departing from a rule

abˈnormally adv



'abnormal' also found in these entries:
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