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

aˈtrial adjective

• quadrilateral
• quadrilateral prism
• quadrilaterals
• quadrilingual
• quadriliteral
• quadriliterals
• quadrille
• quadrilled
• quadriller
• quadrillers
• quadrilles
• quadrilling
• quadrillion
• quadrillions
• quadrillionth
• quadrillionths
• quadrilocular
• quadringenaries
• quadringenary
• quadrinomial
• quadrinomials
• quadripartite
• quadripartition
• quadriplegia
• quadriplegias