Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The condition of not being normal.
  • noun A phenomenon or occurrence that is not normal.

from The Century Dictionary.

  • noun The state or quality of being abnormal; deviation from a standard, rule, or type; irregularity; abnormity.
  • noun That which is abnormal; that which is characterized by deviation from a standard, rule, or type; an abnormal feature.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The state or quality of being abnormal; variation; irregularity.
  • noun Something abnormal.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun behavior that breaches the rule or etiquette or custom or morality
  • noun an abnormal physical condition resulting from defective genes or developmental deficiencies
  • noun retardation sufficient to fall outside the normal range of intelligence
  • noun marked strangeness as a consequence of being abnormal

Etymologies

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