D defs.my
Entry 3 senses Webster, 1913

Labile

· La·bile · IPA /ˈleɪbaɪl/
01 a. Liable to slip, err, fall, or apostatize.
  1. 1.
    Liable to slip, err, fall, or apostatize.[Obs.]
  2. 2.
    Liable or likely to change.
  3. 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.)