Ephemeron

Pronunciation: /ˈiˈpiˈhɛmˈɪɹɑn/

Ephemeron (noun)

  1. A very short-lived insect that lives as an adult for only a brief time, often just hours.
  2. Something that lasts for a very short time, with little lasting effect.
  3. In programming, an object kept only while it is still reachable, then removed by the system.

Examples

  • The ephemeron lived for only a day in the warm air.
  • An ephemeron appears briefly, then disappears from the garden.