over-the-counter

adjective

🔊/ˌəʊvə ðə ˈkaʊntə(r)/

🔊/ˌəʊvər ðə ˈkaʊntər/

(abbreviation OTC)

[only before noun]

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(of drugs and medicines药品) that can be obtained without a prescription无需处方可买到的；非处方的 (= a written order from a doctor)
(business商业, North American English) (of stocks and shares股票及证券) not appearing in an official stock exchange list 场外交易的