- Alternative form of die-off.
- (chiefly biology) The act or process of dying off; extinction.
From die off.
(third-person singular simple present dies off, present participle dying off, simple past and past participle died off)
- (idiomatic) To become extinct (if a group of plants, animals, or people dies off, all of that group dies over a period of time).
die-off - Medical Definition