[n] (physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light)
[n] a written work (as a novel) that has been recast in a new form; "the play is an adaptation of a short novel"
[n] the process of adapting to something (such as environmental conditions)
\Ad`ap*ta"tion\, n. [Cf. F. adaptation, LL. adaptatio.]
1. The act or process of adapting, or fitting; or the state of being adapted or fitted; fitness. ``Adaptation of the means to the end.'' --Erskine.
2. The result of adapting; an adapted form.