Definition of chemo-statical in US English:

chemo-statical

adjective

  • (In the terminology of Stephen Hales) relating to processes and experiments in the natural sciences which supposed air to be ‘fixed’, i.e. rendered inelastic when used for respiration by living organisms or otherwise incorporated into the substance of animate or inanimate objects.

Origin

Early 18th century; earliest use found in Stephen Hales (1677–1761), natural philosopher.