Gas - Definition - Law Dictionary Home Dictionary Definition gas

Definition :

An aeumlriform fluid a term used at first by chemists as synonymous with air but since restricted to fluids supposed to be permanently elastic as oxygen hydrogen etc in distinction from vapors as steam which become liquid on a reduction of temperature In present usage since all of the supposed permanent gases have been liquified by cold and pressure the term has resumed nearly its original signification and is applied to any substance in the elastic or aeumlriform state