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premarket

adjective

pre·​mar·​ket (ˌ)prē-ˈmär-kət How to pronounce premarket (audio)
variants or pre-market
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

Word History

First Known Use

1923, in the meaning defined at sense 1

Time Traveler
The first known use of premarket was in 1923

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