con·sume / kənˈsoōm/ • v. [tr.] eat, drink, or ingest (food or drink). ∎  buy (goods or services). ∎  use up (a resource). ∎  (esp. of a fire) completely destroy. ∎  (usu. be consumed) (of a feeling) absorb all of the attention and energy of (someone): Carolyn was consumed with guilt | [as adj.] (consuming) a consuming passion. DERIVATIVES: con·sum·ing·ly adv.

consume XIV. — (partly through F. consumer) L. consūmere, f. CON- + sūmere take.
So consumption using up, wasting away, spec. by disease. XIV. — (O)F. consomption — L. consumptiō, -ōn-, f. consumere, consumpt-, consumptive XV. — medL. consumptīvus.