D defs.my
Entry 1 sense Webster, 1913

Emphysema

/ĕmˌ-fəz-ēm'-ə/ · Em·phy·se·ma · IPA /ˌɛmfɪˈsimə/
01 n. A swelling produced by gas or air diffused in the cellular tissue.
  1. 1.
    A swelling produced by gas or air diffused in the cellular tissue.(Med.)
Phrases & compounds
Emphysema of the lungs — a common disease of the lungs in which the air cells are distended and their partition walls ruptured by an abnormal pressure of the air contained in them.