Definition of premarket
1
: occurring in the period prior to a product being available for purchase
- premarket safety testing
- a premarket clinical study of a drug
- Dietary supplements are essentially exempt from premarket approval and testing because, unlike many drugs, they do not claim to be effective, pure, and safe.
- —Noel C. Paul
- … fixed a premarket problem that led to lost pressure in the control.
- —Bicycling
2
: occurring prior to the opening of a stock market
- premarket trading
