What does "warmth" mean?

Warmth: A state of lively and excited interest; zeal; ardor; fervor; passion; enthusiasm; earnestness; as, the warmth of love or piety; he replied with much warmth. "Spiritual warmth, and holy fires." Jer. Taylor. That warmth . . . which agrees with Christian zeal. Sprat.

Additional senses

  1. 2.(Paint.) The glowing effect which arises from the use of warm colors; hence, any similar appearance or effect in a painting, or work of color.

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