sanitarium

From New Latin sānitārium, from sānitās (“health”).

sanitarium (plural sanitariums or sanitaria)

1. (US) Alternative form of sanatorium
   • 1913, Joseph C. Lincoln, chapter 5, in Mr. Pratt's Patients:

     Of all the queer collections of humans outside of a crazy asylum, it seemed to me this sanitarium was the cup winner. […] When you're well enough off so's you don't have to fret about anything but your heft or your diseases you begin to get queer, I suppose.

• Mauritians