1. not transacted through an organized securities exchange; directly to the buyer or from the seller: He sold his stocks over the counter. 2. Pharm.without a doctor's prescription but within the law.
Pronunciation: (ō'vur-&thslash;u-koun'tur),[key] —adj. 1. unlisted on or not part of an organized securities exchange: over-the-counter stocks; the over-the-counter market. Abbr.: OTC
2. Pharm.sold legally without a doctor's prescription: over-the-counter drugs.Abbr.: OTC