Define 'aberration'.

The term 'aberration' refers to a departure from what is normal or expected. In many contexts, it signifies an anomaly or irregularity that stands out against the usual patterns or behaviors. When something is described as an aberration, it implies that it diverges from the standard or typical state, thereby capturing the essence of something unusual or unexpected.

This definition aligns with the chosen answer, which emphasizes the concept of difference from the norm. In various fields, including scientific and moral discussions, recognizing aberrations is vital as they can indicate significant deviations that warrant further investigation or consideration. Understanding aberrations can also play a critical role in identifying problems, opportunities for improvement, or instances that require attention.