IPA: /əˈnɒ.mə.ləs/
KK: /əˈnɑː.mə.ləs/
Different from what is usual or expected; not normal.
The scientist found an anomalous result in the experiment that required further investigation.
Anomalous → It is formed from "an-" (meaning not) and "homalos" (from Greek, 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 anomalous means something unusual or irregular.