atrium /äˈ or āˈtri-əm or -ŭm/

1. The entrance hall or chief apartment of an ancient Roman house
2. A church forecourt or vestibule
3. A central courtyard (architecture)
4. A cavity or entrance (zoology and anatomy)
5. Specif either of the two upper cavities of the heart into which blood passes from the veins

• insusceptibility
• insusceptible
• insusceptibly
• insusceptive
• insusceptively
• inswathe
• inswing
• inswinger
• inswingers
• inswings
• in sympathy
• in sympathy with
• in sync
• in synch
• int.
• Int.
• intact
• intactness
• intactnesses
• intagliated
• intaglio
• intaglioed
• intaglioing
• intaglios
• in tail