Webster's Revised Unabridged Dictionary · 1913

Ingredient

Ingredient , noun

[French ingrédient, Latin ingrediens, -entis, entering into, present participle of ingredi, p. p. ingressus, to go into, to enter; pref. in- in + gradi to walk, go. See Grade.]

That which enters into a compound, or is a component part of any combination, recipe, or mixture; an element; a constituent.
By way of analysis we may proceed from compounds to ingredients. — Sir I. Newton
Water is the chief ingredient in all the animal fluids and solids. — Arbuthnot

Ingredient , adjective

Entering as, or forming, an ingredient or component part.
Acts where no sin is ingredient. — Jer. Taylor