Do you really want to send Webster 1913 a message saying you like their work?
Xan`tho*pro"te*in (?), n. [Xantho- + protein.] (Physiol. Chem.)
A yellow acid substance formed by the action of hot nitric acid on albuminous or proteid matter. It is changed to a deep orange-yellow color by the addition of ammonia.
© Webster 1913