Here are some examples of how it can be used:
* "The scientist observed an anomalous reading on the thermometer." (The reading was unexpected and different from what was usually seen.)
* "Her behavior was anomalous for someone who was usually so outgoing." (Her behavior was unusual and did not match her typical personality.)
* "The archaeological discovery of a Roman coin in a Viking burial site was anomalous." (Finding a Roman coin in a Viking burial site was unexpected and out of place.)
Essentially, something is anomalous when it stands out and doesn't fit the pattern or norm.