Compactness/kəmˈpæktnəs,ˈkɑːmpæktnəs/ Definition 1 of 3Pro Tip 1/3Urban Convenience Refers to the ease of moving around in a space-saving urban layout. The compactness of the apartment complex adds to urban convenience. Pro Tip 2/3Efficient Layout Describes the smart use of space found in good designs. The compactness of the new library design was impressive. Pro Tip 3/3Not Always Positive It may suggest cramped or uncomfortable spaces if overemphasized. Despite its compactness, the room felt a bit claustrophobic.