- 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.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.