See Also: coumarone(dictionary)

coumarone (iou)



coumarone noun. Also cumarone. L19.
[from COUMARIN + -ONE.]
Chemistry. A colourless liquid (C8H6O) present in coal tar, which is related to coumarin and is used in making synthetic resins; any derivative of this.
Comb.: coumarone resin any of various thermoplastic resins produced by polymerizing coumarone with indene and used esp. in the rubber and varnish industries.