GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   Empyrean , n. [See Empyreal.] The highest heaven, where the pure element of fire was supposed by the ancients to subsist.
   1913 Webster
   The empyrean rung
   With hallelujahs.
   Milton.
   
   1913 Webster
   
         
       

2.       
   Empyrean, a. Empyreal.
   Akenside.
   
   1913 Webster