triduum /tridˈū-əm or trīˈdū-/ (esp RC)

1. A space of three days
2. A period of prayer or religious celebration lasting three days

tridˈūan adjective

Lasting three days

• hydromechanics
• hydromedusa
• hydromedusae
• Hydromedusae
• hydromedusan
• hydromedusas
• hydromedusoid
• hydromel
• hydromels
• hydrometallurgy
• hydrometeor
• hydrometeorology
• hydrometeors
• hydrometer
• hydrometers
• hydrometric
• hydrometrical
• hydrometries
• hydrometry
• Hydromys
• hydronaut
• hydronauts
• hydronephroses
• hydronephrosis
• hydronephrotic