detumescence

from WordNet (r) 3.0 (2006)

detumescence
    n 1: diminution of swelling; the subsidence of anything swollen

from The Collaborative International Dictionary of English v.0.48

Detumescence \De`tu*mes"cence\, n. [L. detumescere to cease
   swelling; de + tumescere, tumere, to swell.]
   Diminution of swelling; subsidence of anything swollen. [R.]
   --Cudworth.
   [1913 Webster]