plural of chemical substance

(biochemistry) A tachykinin neuropeptide associated with inflammatory processes and pain.

(Canada, law) The content or subject matter, the leading feature or true nature and character of a law.

plural of alarm substance

(chemistry) The number of particles or formula units (depending on type) present of some substance in some sample; SI unit: mole.

plural of amount of substance

plural of controlled substance

With respect to substance.

A pure chemical substance consisting of a single element (e.g. hydrogen gas).

The essential meaning of written or spoken words; gist, crux.