UNSATURATED
Un*sat"u*ra`ted, a.
1. Capable of absorbing or dissolving to a greater degree; as, an unsaturated solution.
2. (Chem.)
Defn: Capable of taking up, or of uniting with, certain other elements or compounds, without the elimination of any side product; thus, aldehyde, ethylene, and ammonia are unsaturated.
UNSATURATION
Un*sat`u*ra"tion, n.
Defn: The quality or state of being unsaturated.
UNSAY
Un*say, v. t. Etym: [1st pref. un- + say.]
Defn: To recant or recall, as what has been said; to refract; to take back again; to make as if not said. You can say and unsay things at pleasure. Goldsmith.
UNSCALE
Un*scale", v. t. Etym: [1st pref. un- + scale.]
Defn: To divest of scales; to remove scales from. [An eagle] purging and unscaling her long-abused sight at the fountain itself of heavenly radiance. Milton.