Obs. rare. Also 7 spat-. [ad. F. spaciosité (also † spatiosité, = It. spaziosità, Sp. espaciosidad) or late L. spatiōsitas, f. spatiōsus SPACIOUS a.] a. A hollow or cavity. b. Spaciousness; extensiveness.
1541. R. Copland, Guydons Quest. Chirurg., L iv b. In depe woundes that haue nede to be serched for the lycour that assembleth in the botome of the spaciosite.
1620. Shelton, Quix., II. IV. xvi. 204. That you may behold the Knitting of the Muscles, and the Spaciosity and Breadth of the Veins.
1694. R. Burthogge, Reason, v. § 1. 108. Of spatiosity or extension I shall have occasion to discourse hereafter, when I come to speak of quantity.