<p><strong>Noun</strong></p><ul><li>the act of departing from the right, normal, or usual course: Leaving that spelling error in her final report was an aberration from her usual meticulous work, and it surprised her colleagues.</li><li>Synonyms: divergence, deviation, wandering</li><li>an instance of deviating from the ordinary, usual, or normal type: Certain disorders may be caused by a chromosomal aberration, such as the absence or duplication of a particular chromosome. Last season was an aberration in the league, with a sharp increase in the number of injuries to players.</li><li>deviation from truth or from good ethics: Disgust may begin as physical revulsion that is eventually triggered by anything a person sees as moral aberration.</li><li>a departure from sound thinking; lapse in judgment: Through some strange aberration or oversight, the author rejected my own much more subtle and effective amendments.</li><li>Synonyms: hallucination, delusion, illusion, eccentricity, abnormality</li><li>Astronomy: apparent displacement of a heavenly body, owing to the motion of the earth in its orbit.</li><li>Optics: any disturbance of the rays of a pencil of light such that they can no longer be brought to a sharp focus or form a clear image.</li><li>Photography: a defect in a camera lens or lens system, due to flaws in design, material, or construction, that can distort the image.</li></ul>