- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Members of Zobral's social caste were onced force to wear these to signify their low social standing. Yrotts were burned in celebration of the caste system being abolished. The word also means "to stand apart."