IPA: /əˈnɒməli/
KK: /əˈnɑːməli/
A situation or event that is different from what is usual or expected, often seen as unusual or abnormal.
The scientist discovered an anomaly in the data that required further investigation.
Anomaly → It is formed from "an-" (meaning not) and "homalos" (meaning even or regular). The word describes something that is not regular or deviates from the norm.
Think of something that is 'not' ('an-') 'even' or 'regular' ('homalos') — that's why anomaly refers to something unusual or irregular.