Aberration – departure from the normal
A bear caused a sensation (aberration) when entering the departure lounge of the airport. The other passengers thought it was far from normal.
An aberration could be a mistake or an out-of-character action by a person; or a fault that develops in a mechanical device. In biology, it is an animal or plant characteristic that deviates from the norm.
Examples of “aberration” in a sentence
“He said his failure to bank the takings was a temporary aberration.”
The machine had an aberration – instead of cleaning the tiles it smashed them to pieces.
All the flowers on the plant were blue apart from one bright yellow one: it was an aberration.