aberrance /-erˈ/ or aberrˈancy noun

aberrˈant adjective

1. Wandering or straying
2. Having characteristics not strictly in accordance with type (botany and zoology)

aberrˈantly adverb

aberrāˈtion /-ər-/ noun

1. A deviation from the usual, normal or right course, direction or behaviour
2. A wandering of the intellect, mental lapse
3. A non-convergence of rays, owing to difference in refrangibility of different colours (chromatic aberration) or to difference of focus of the marginal and central parts of a lens or mirror (spherical aberration)
4. An apparent displacement of a star, owing to the finite ratio of the velocity of light to that of the earth (aberration of light; astronomy)

aberraˈtional adjective