壊死

1. Origins, structure, and basic meaning

• Structure: In 壊死 (えし), breakdown 壊 and death 死 combine to denote necrosis of tissue.
• Basic usage: 壊死 is the medical death of cells or tissue due to impaired blood flow, injury, or another cause.

2. Common pitfalls and similar expressions

• Death of tissue
  • It does not mean the death of the whole organism; the subject of 壊死した is typically affected tissue.