1
Statistical outlier
A measurement or result that differs sharply from the rest of a dataset.
Example
A single anomaly prompted the team to repeat the experiment.
anomaly
/əˈnɒməli/ · uh-NOM-uh-leenoun
Something outside what is normal, expected, or consistent with a pattern.
Use anomaly for an observation, result, or feature that departs noticeably from the pattern established by the surrounding evidence.
What anomaly Really Means
The word becomes easier to use when its closely related senses are separated and compared.
2
Unexpected exception
A case that does not follow an otherwise reliable rule or trend.
Example
The warm year was an anomaly within a decade of unusually cool conditions.
3
Unusual feature
A structure or event that appears out of place and calls for investigation.
Example
The survey revealed a magnetic anomaly beneath the field.
Use anomaly Naturally
Notice how the surrounding noun or clause reveals the exact shade of meaning.
A single anomaly prompted the team to repeat the experiment.
Researchers initially treated the unusual reading as an anomaly rather than evidence of a new trend.
The building is an architectural anomaly in a district dominated by modern towers.
Precision Matters
Anomaly overlaps with several common words, but each carries a different emphasis.
anomaly
vs.Can describe any unexpected case, feature, or event.
outlier
Usually describes a data point numerically distant from other observations.
anomaly
vs.Emphasises departure from an observed pattern and often invites investigation.
exception
Simply identifies a case not covered by a general rule.
anomaly
vs.May be genuine evidence rather than a mistake.
error
Results from an incorrect action, calculation, or measurement.
anomaly
vs.Is a distinct case that differs from what is expected.
irregularity
Broadly means a lack of regularity and can imply procedural wrongdoing.
Test anomaly in Context
One observation departs dramatically from an otherwise consistent set of measurements.
1
Nine sensors recorded temperatures within one degree of one another, but a tenth reported a value twenty degrees higher; the team treated that reading as an ___ pending recalibration.