
• (n.) A brownish resinous substance obtained as a by-product in the treatment of cinchona bark. It consists of a mixture of several alkaloids.
Found on
http://thinkexist.com/dictionary/meaning/quinoidine/
Qui·noid'ine noun [
Quin ine +
-oid .]
(Med. (Chemistry) 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 .]
Found on
http://www.encyclo.co.uk/webster/Q/11

a brownish-black, resinous substance consisting of a mixture of alkaloids, obtained as a by-product in the manufacture of quinine and formerly used as a cheap substitute for it.
Found on
https://www.infoplease.com/dictionary/quinoidine
No exact match found.