aperiodic /ā-pē-ri-odˈik/

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

aperiodicity /-ə-disˈi-ti/ noun

• hay knives
• hayle
• hayles
• hayloft
• haylofts
• haymaker
• haymakers
• haymaking
• haymakings
• haymow
• haymows
• hayrake
• hayrakes
• hayrick
• hayricks
• hayride
• hayrides
• hays
• hayseed
• hayseeds
• haysel
• haysels
• haystack
• haystacks
• hayward