sub-apartment

plural sub-apartments

1. An apartment forming part of a larger apartment.

   The buildings had been converted to small rooms and sub-apartments, one stacked inside another.

   2010, Grace Krilanovich, The Orange Eats Creeps

   2 more examples

   […] the same crowded conditions in each of the five one-room and my friends' two-room (for five adults) subapartments of the communal apartment.

   1957, The Reporter, volume 16, page 18

   The royal quarters arced on either side like a horseshoe, and our temporary home was to the very end of the hall, in a sub-apartment that opened with yet another bio-lock.

   2020, Alexa Donne, The Stars We Steal