1. the quality of being spacious or having a large capacity; roominess

Examples

• The capaciousness of the new library impressed all the visitors.
• We were amazed by the capaciousness of the cathedral’s interior.
• The capaciousness of her memory allowed her to recall countless details.
• The architect designed the building with capaciousness in mind.
• The capaciousness of the auditorium accommodated over a thousand guests.
• His mind’s capaciousness enabled him to grasp complex concepts quickly.