The story
- Latin · borrowed fromspatiōsitās
- English todayspaciosity
From Latin spatiōsitās, modified after spacious; compare Middle English spaciosite, spaciositee, Middle French spaciosite (“hollow space or cavity”), and modern French spaciosité (“spaciousness, extensiveness”, 1842).
First known use, by meaning
- from 1612 The property of being spacious.
Etymology from Wiktionary, CC BY-SA 4.0.