1
Core meaning
A departure or difference from an expected value, rule, path, or normal pattern.
Example
The instrument detected a small deviation from the predicted value.
deviation
/ˌdiːviˈeɪʃən/ · dee-vee-AY-shunnoun
A departure or difference from an expected value, rule, path, or normal pattern.
Use deviation to express this relationship precisely: a departure or difference from an expected value, rule, path, or normal pattern.
What deviation Really Means
The word becomes easier to use when its closely related senses are separated and compared.
2
Common noun frame
Use this noun in a complete noun phrase, adding the complement that identifies what it refers to when needed.
Example
Any deviation from the protocol had to be documented.
3
Analytical distinction
Choose it when this exact concept matters; a related term may describe its cause, evidence, or opposite instead.
Example
The third trial's deviation may reflect a calibration error.
Use deviation Naturally
Notice how the surrounding noun or clause reveals the exact shade of meaning.
The instrument detected a small deviation from the predicted value.
Any deviation from the protocol had to be documented.
The third trial's deviation may reflect a calibration error.
Precision Matters
Deviation overlaps with several common words, but each carries a different emphasis.
deviation
vs.Means a departure or difference from an expected value, rule, path, or normal pattern.
anomaly
Means something outside what is normal, expected, or consistent with a pattern.
deviation
vs.Means a departure or difference from an expected value, rule, path, or normal pattern.
divergent
Means moving, developing, or differing in separate directions.
deviation
vs.Means a departure or difference from an expected value, rule, path, or normal pattern.
erratic
Means unpredictable, irregular, or inconsistent.
deviation
vs.Means a departure or difference from an expected value, rule, path, or normal pattern.
consistent with
Means in agreement or harmony with; not contradicted by.
Test deviation in Context
The reading departs from what is normal or expected.
1
The unusually high reading represents a clear ___ from the otherwise stable pattern.