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

• nephrotomy
• penology
• penoncel
• penoncelle
• penoncelles
• penoncels
• pen pal
• pen pals
• pen-pusher
• pen-pushers
• pens
• pensel
• pensels
• pensieroso
• pensil
• pensile
• pensileness
• pensilenesses
• pensilities
• pensility
• pensils
• pension
• pensionable
• pensionaries
• pensionary