Labile /(?)/

La·bile

Labile

a.
  1. Liable to slip, err, fall, or apostatize. [Obs.]
  2. Liable or likely to change.
  3. Easily decomposed or inactivated when subjected to heat, radiation, or mildly acidic or alkaline conditions; -- of chemical compounds; as, enzymes from thermophilic organisms are not as labile as those from mesophiles. (Chem.)