Capable of being achieved, which either means possible or probable. / Not linked to fate or outside influences.

(optics) Free from color; transmitting light without color-related distortion. / Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.

(Irish mythology) In the Ulster Cycle of Irish mythology, the daughter of Cairbre Nia Fer; committed suicide after her brother Erc was killed by Conall Cernach.

(optics) A lens generally composed of two separate lenses, one convex and one concave and generally of different materials, in such a way that the chromatic aberration produced by one is corrected by the other.

A spicy and salty pickle in Indian cuisine.

(medicine, pathology) A neuromuscular condition where a ring of muscles is unable to relax fully; usually with reference to gastrointestinal smooth muscles or to esophageal achalasia when not otherwise specified.

(possibly dated, now less commonly used by native speakers) Alternative form of Ahab.

A male given name of historical usage only.

plural of Achaean

A town in Greece located in the northwestern Achaea prefecture.