Definitions

1. noun

A naturally occurring beta-adrenergic agonist found in bitter orange (Citrus aurantium) that is used in medicine and as an ingredient in weight-loss products.

“The supplement contained synephrine, which was said to increase metabolism.”

2. noun

A compound used as a stimulant and for its potential weight loss effects.

“Synephrine has been used as a substitute for ephedrine in some weight loss supplements.”