quadrominium

[ kwod-ruh-min-ee-uh m ]
/ ˌkwɒd rəˈmɪn i əm /

noun

a building consisting of four individually owned apartments or living units.

Origin of quadrominium

First recorded in 1970–75; quadr- + (cond)ominium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019