aperiodic /ā-pē-ri-odˈik/

1. Not periodic
2. Highly damped and coming to rest without oscillation (physics)

aperiodicity /-ə-disˈi-ti/ noun

• regrades
• regrading
• regrant
• regrants
• regrate
• regrated
• regrater
• regraters
• regrates
• regrating
• regratings
• regrator
• regrators
• regrede
• regreded
• regredes
• regredience
• regrediences
• regreding
• regreet
• regreeted
• regreeting
• regreets
• regress
• regressed