Lewis Short
ardor (noun M) : ardeo
* A flame, fire, heat, burning heat, lit. and trop.
* Lit.: solis ardor,Lucr. 2, 212: exortus est sol cum ardore,Vulg. Jac. 1, 11: ignium,Lucr. 5, 587: ignis,Vulg. 2 Pet. 3, 12: flammarum,Lucr. 5, 1093: flammaï,id. 5, 1099 al.: visas ab occidente faces ardoremque caeli,Cic. Cat. 3, 8: ardor caelestis, qui aether vel caelum nominatur,id. N. D. 2, 15, 41: ardore deflagrare,id. Ac. 2, 37, 119: ardores corporum in morbis,Plin. 14, 16, 18, § 99: Visitabo vos in egestate et ardore,with burning fever,Vulg. Lev. 26, 16 al.
* Trop.
* Of the flashing fire of the eyes, brightness, brilliancy: fervescit et ex oculis micat acribus ardor,and fire gleams forth from the keen eyes,Lucr. 3, 289: ille imperatorius ardor oculorum,Cic. Balb. 21, and id. N. D. 2, 42, 107.—Of the external appearance in gen.: in te ardor voltuum atque motuum,Cic. Div. 1, 37, 80: oris,animation,Vell. 2, 35.
* Of the passions or feelings, heat, ardor, glow, impatience, eagerness, ardent desire: Sive voluptas est sive est contrarius ardor, i. e. dolor,some tormenting pain,Lucr. 3, 251: cupiditatum ardore restincto,Cic. Fin. 1, 13, 43: ardor mentis ad gloriam,id. Cael. 31: quem ardorem studii censetis fuisse in Archimede, qui etc.,id. Fin. 5, 19, 50: ardor animi non semper adest, isque cum consedit,id. Brut. 24, 93: vultus ardore animi micans,Liv. 6, 13: ardorem compescere,Tac. Agr. 8; Liv. 8, 16. —Transf. from the combatants to the weapons: tantus fuit ardor armorum,Liv. 22, 5: Ardorem cupiens dissimulare meum,glowing love,Tib. 4, 12, 6; so Ov. M. 7, 76.— With obj. gen.: at te ejusdem virginis ardor Perdiderat,Ov. M. 9, 101; 9, 140; Hor. Epod. 11, 27 al.—And meton., the object of ardent affection, love, flame: tu primus et ultimus illi Ardor eris,Ov. M. 14, 683.
Charlton T. Lewis, Charles Short, A Latin Dictionary