Lewis & Short

dē-fervĕfăcĭo, fēci, factum, 3, v. a., to seethe or cause to boil.

  1. I. Prop.: brassicam bene, Cato R. R. 157, 9: aquam in aëno, Vitr. 8, 5: radicem in vino, Plin. 23, 7, 64, § 129.
  2. * II. Transf.: aër defervefactus in pulmone, heated, Varr. ap. Lact. Opif. Dei 17.