n.
Pronunciation: ˌ tü-m ə - ' fak-sh ə n, ˌ tyü-
Function: noun
Etymology: Middle English tumefaccioun, from Medieval Latin tumefaccion-, tumefaccio, from Latin tumefacere to cause to swell, from tum ē re to swell + facere to make, do ― more at THUMB , DO
Date: 15th century
1 : an action or process of swelling or becoming tumorous
2 : SWELLING