Webster’s Revised Unabridged Dictionary · 1913
Preservatory
Pre·serv′a·to·ry (·tō·ry̆), a. Preservative. Bp. Hall.
Pre·serv′a·to·ry, n.; pl. Preservatories. 1. A preservative. [Obs.] Whitlock.
2. A room, or apparatus, in which perishable things, as fruit, vegetables, etc., can be preserved without decay.