10 letters · 16 points in Scrabble
noun tumidity resulting from the presence of blood or other fluid in the tissues
originFirst attested 1725, from French tumescence, from Latin tumescēns (“swelling”), present participle of tumēscō (“to begin to swell”), from tumeō (“to swell”) + -ēscō (incohative suffix) (English -esce, in this form -escence), stem from Proto-Indo-European *tum-éh₁- (“to be swelling”), stative stem of *tum- (“to swell”).
Etymology from Wiktionary, CC BY-SA 3.0