noun \ə-ˈnä-mə-lē\

: something that is unusual or unexpected : something anomalous

plural anom·a·lies

Full Definition of ANOMALY

:  the angular distance of a planet from its perihelion as seen from the sun
:  deviation from the common rule :  irregularity
:  something anomalous :  something different, abnormal, peculiar, or not easily classified

Examples of ANOMALY

  1. We couldn't explain the anomalies in the test results.
  2. <her C grade is an anomaly, as she's never made anything except A's and B's before>
  3. In approximately 10% of patients, autism can be explained by genetic syndromes and known chromosomal anomalies (most of which have recognizable features in addition to autism) … —Lauren A. Weiss et al.,New England Journal of Medicine, 14 Feb. 2008

Origin of ANOMALY

(see anomalous)
First Known Use: 1603

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wane, wax, zenith


noun \ə-ˈnäm-ə-lē\   (Medical Dictionary)
plural anom·a·lies

Medical Definition of ANOMALY

: a deviation from normal especially of a bodily part <the infants demonstrated congenital anomalies> <personality anomalies>


Next Word in the Dictionary: anomie
Previous Word in the Dictionary: Anomalurus
All Words Near: anomaly

Seen & Heard

What made you want to look up anomaly? Please tell us where you read or heard it (including the quote, if possible).