preservatory noun 2adjective 1forms 3 noun2 •(no longer used) A room or apparatus in which perishable things can be preserved without decay. •(no longer used) A preservative. adjective1 •preservativeBut, all this while, the intentions and endeavours must be no other than preservatory; however it pleaseth God to order the events — 1649 formspreservatories · more preservatory · most preservatory