- Enter a word for the dictionary definition.
From The Collaborative International Dictionary of English v.0.48:
Quinoidine \Qui*noid"ine\, n. [Quinine + -oid.] (Med. Chem.) A brownish resinous substance obtained as a by-product in the treatment of cinchona bark. It consists of a mixture of several alkaloids. [Written also chinoidine.] [1913 Webster]