from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A derivative of xylene obtained as a white crystalline substance that turns red on exposure to air.
from the GNU version of the Collaborative International Dictionary of English
- n. A derivative of xylene obtained as a white crystalline substance which on exposure in the air becomes red; -- called also betaorcin.
xylo- + orcin (Wiktionary)