inhibitant

plural inhibitants

1. chemistrysomething that inhibits.

   the inhibitant is converted by oxidation into carbon dioxide.

   1922, Edward Maxted, The Chemical Age, page 816

   2 more examples

   A still more interesting case, in which the enzyme and inhibitant occur actually combined together has been revealed by the researches of Dr. S. Hedin on Rennet,

   1912, Arthur Harden, The Chemical world: A monthly journal of chemistry and chemical engineering, Volume I, page 192

   It is shown that the mother-substance, the zymogen, of the clot-inducing substance is not simple but is a compound of the enzyme and an inhibitant for that enzyme.

   1919, William Emerson Ritter, The Unity of the Organism; Or, The Organismal Conception of Life, page 105