sunset

Meanings

1. 1
   adj

   of a declining industry or technology

   sunset industries

2. 2
   noun

   The moment each evening when the sun disappears below the western horizon.

   at sunset

3. 3
   noun

   The final period of the life of a person or thing.

   one's sunset years

4. 4
   noun

   A set termination date.

   The tax increase legislation included a sunset clause requiring renewal to prevent the tax increase from expiring.

5. 5
   verb

   To phase out.

   We’ll be sunsetting version 1.9 of the software shortly after releasing version 2.0 next quarter.

6. 6
   adj

   providing for termination

7. 7
   noun

   the daily event of the sun sinking below the horizon

8. 8
   noun

   atmospheric phenomena accompanying the daily disappearance of the sun

Etymology

From Middle English son-sett, Sonne set, equivalent to sun + set. In Gower's Confessio Amantis, before 1393.