pre·ad·ap·ta·tion 
(prē′ăd-ăp-tāshən, -əp-)
(prē′ăd-ăp-tāshən, -əp-)n.
1. A characteristic of an ancestral species or population that serves an adaptive though different function in a descendant species or population.
2. The ability of a characteristic to assume a new biological function without evolutionary modification.
- specter
- spectinomycin
- spectra
- spectral
- spectrality
- spectral line
- spectrally
- spectralness
- spectre
- spectrin
- spectro-
- spectrogram
- spectrograph
- spectrographic
- spectrographically
- spectrography
- spectroheliogram
- spectroheliograph
- spectroheliographic
- spectroheliography
- spectrohelioscope
- spectrohelioscopic
- spectrometer
- spectrometric
- spectrometry