swap·tion 
(swŏpshən)
(swŏpshən)n.
An option giving the buyer the right to enter into a swap agreement by a specified date.
[Blend of SWAP and OPTION.]
- superheat
- superheater
- superhelical
- superhelically
- superhelix
- superhero
- superheterodyne
- superhigh frequency
- superhighway
- superhuman
- superhumanity
- superhumanly
- superimposable
- superimpose
- superimposition
- superincumbence
- superincumbency
- superincumbent
- superinduce
- superinduction
- superinfect
- superinfection
- superintend
- superintendence
- superintendent