Definition of empyreum in English:

empyreum

noun

  • Empyrean.

Origin

Mid 16th century; earliest use found in William Alley (d. 1570), bishop of Exeter. From post-classical Latin empyreum (also empireum) fiery heaven or sphere of fire, use as noun (short for caelum empyreum fiery heaven) of neuter of empyreus fiery.

Pronunciation

empyreum

/ˌɛmpɪˈriːəm//ˌɛmpʌɪˈriːəm/