INCOERCIBLE

Etymology

Adjective

incoercible (comparative more incoercible, superlative most incoercible)

Not to be coerced; incapable of being compelled or forced.

(physics, of a gas) Not capable of being reduced to liquid form by pressure.

(physics, archaic) That cannot be confined in, or excluded from, vessels, like ordinary fluids, gases, etc.; said of heat, light, electricity, etc.

Source: Wiktionary

In`co*er"ci*ble, a. Etym: [Pref. in- not + coercible: cf. F. incoercible.]

1. Not to be coerced; incapable of being compelled or forced.

2. (Physics)

Definition: Not capable of being reduced to the form of a liquid by pressure; -- said of any gas above its critical point; -- also particularly of oxygen, hydrogen, nitrogen, and carbon monoxide, formerly regarded as incapable of liquefaction at any temperature or pressure.

3. (Physics)

Definition: That can note be confined in, or excluded from, vessels, like ordinary fluids, gases, etc.; -- said of the imponderable fluids, heat, light, electricity, etc.

Source: Webster’s Unabridged Dictionary 1913 Edition