from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A brownish-black mixture of alkaloids remaining after extraction of crystalline alkaloids from cinchona bark, used as a quinine substitute.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A brownish resinous substance obtained as a by-product in the treatment of cinchona bark.
from the GNU version of the Collaborative International Dictionary of English
- n. A brownish resinous substance obtained as a by-product in the treatment of cinchona bark. It consists of a mixture of several alkaloids.
from The Century Dictionary and Cyclopedia
- n. Same as chinoidine.
Sorry, no etymologies found.
It differs from _quinoidine_ in that it is inactive (?) and that in combination with platinum it retains less of this metal than does quinoidine.