Meaning of capaciousness

(noun) intellectual breadth; "the very capaciousness of the idea meant that agreement on fundamentals was unnecessary"; "his unselfishness gave him great intellectual roominess"

spatial largeness and extensiveness (especially inside a building); "the capaciousness of Santa's bag astounded the child"; "roominess in this size car is always a compromise"; "his new office lacked the spaciousness that he had become accustomed to"