protractile
1. [ adjective ] able to be extended
Synonyms: protractible
Examples:

"protractile muscle"

Related terms: extensile
Similar spelling:   protractible
  protract
  protracted
  protraction
  protractedly
  protrusile
  protractor
  protriptyline
  pretorial
  preternatural
  preterition
  protrusible
  Pretoria
  preterit
  prothorax
  pretorian
  pretermit
  preterist