- The act of wandering; deviation, especially from truth or moral rectitude, from the natural state, or from a type.
Occasional aberrations of intellect - Lingard Aberrations from theory - Burke
- A partial alienation of reason.
Whims, which at first are the aberrations of a single brain, pass with heat into epidemic form - I. Taylor
(astronomy) A small periodical change of position in the stars and other heavenly bodies, due to the combined effect of the motion of light and the motion of the observer.
(context, optics) The convergence to different focus, foci, by a lens or mirror, of rays of light emanating from one and the same point, or the deviation of such rays from a single focus.
(physiology) The passage of blood or other fluid into parts not appropriate for it.
- The producing of an unintended effect by the glancing of an instrument, as when a shot intended for A glances and strikes B.
(context, zoology, botany) atypical development or structure
nounOften used adjectivally
- One who, or that which, accelerates.
- A device for causing acceleration.
- A substance which speeds up chemical reactions.
- accelerator pedal.
- an early type of photograph in which a glass negative appears positive when displayed on a black background