ardor

ardor is a   Noun

Definition:

[1] Heat, in a literal sense; as, the ardor of the sun`s rays.

[2] Warmth or heat of passion or affection; eagerness; zeal; as, he pursues study with ardor; the fought with ardor; martial ardor.

[3] Bright and effulgent spirits; seraphim. [Thus used by Milton.]

Synonyms: