Definition of “sublingual” - English Dictionary

british dictionary

“sublingual” in British English

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sublingualadjective

uk /ˌsʌbˈlɪŋ.ɡwəl/ us /ˌsʌbˈlɪŋ.ɡwəl/ specialized

under the tongue:

sublingual glands
The sublingual tablets relax the arteries of the heart.

(Definition of “sublingual” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)