SINCE 1828
premarket
adjective
pre·mar·ket
| \ (ˌ)prē-ˈmär-kət
\
\
variants:
or pre-market
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
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