Definition of tumescent in English:

tumescent

adjective

  • Swollen or becoming swollen, especially as a response to sexual arousal.

    swollen, bloated, tumescent, dilated, engorged, enlarged, inflated, stretched, blown up, pumped out, pumped up
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Origin

Mid 19th century: from Latin tumescent- beginning to swell, from the verb tumescere, from tumere to swell.

Pronunciation:

tumescent

/tjʊˈmɛs(ə)nt/