Definitions

1. noun

A white, crystalline alkaloid derived from opium, used as a precursor in the synthesis of morphine and other opium alkaloids.

“The researchers isolated thebaine from the opium poppy and used it to synthesize morphine.”

2. chemistry

A naturally occurring alkaloid found in opium, with the chemical formula C19H21NO3.

“Thebaine has been used as a starting material for the synthesis of various opium alkaloids.”