from
The Collaborative International Dictionary of English v.0.48
Incoercible \In`co*er"ci*ble\, a. [Pref. in- not + coercible:
cf. F. incoercible.]
[1913 Webster]
1. Not to be coerced; incapable of being compelled or forced.
[1913 Webster]
2. (Physics) Not capable of being reduced to the form of a
liquid by pressure; -- said of any gas above its {critical
temperature}.
[1913 Webster +PJC]
3. (Physics) That can note be confined in, or excluded from,
vessels, like ordinary fluids, gases, etc.; -- said of the
imponderable fluids, heat, light, electricity, etc.
[1913 Webster]