Ĕx'tu-mĕs'çence, n.

n. [Fr. extumescence, from Lat. extumescens, p. pr. of extumescere, to swell up, from ex, out of, from, and tumescere, to begin to swell, v. inchoative from tumere, to swell.] A swelling or rising. [Obs.] Cotgrave.