Noun

• S: (n) heat (heat%1:19:00::), heat energy (heat_energy%1:19:00::) (a form of energy that is transferred by a difference in temperature)
• S: (n) hotness (hotness%1:07:00::), heat (heat%1:07:01::), high temperature (high_temperature%1:07:00::) (the presence of heat)
• S: (n) heat (heat%1:09:00::), warmth (warmth%1:09:00::) (the sensation caused by heat energy)
• S: (n) heat (heat%1:07:02::), warmth (warmth%1:07:02::), passion (passion%1:07:00::) (the trait of being intensely emotional)
• S: (n) estrus (estrus%1:26:00::), oestrus (oestrus%1:26:00::), heat (heat%1:26:00::), rut (rut%1:26:00::) (applies to nonhuman mammals: a state or period of heightened sexual arousal and activity)
• S: (n) heat (heat%1:11:00::) (a preliminary race in which the winner advances to a more important race)
• S: (n) heating system (heating_system%1:06:00::), heating plant (heating_plant%1:06:00::), heating (heating%1:06:00::), heat (heat%1:06:00::) (utility to warm a building) "the heating system wasn't working"; "they have radiant heating"

Verb

• S: (v) heat (heat%2:30:01::), heat up (heat_up%2:30:00::) (make hot or hotter) "the sun heats the oceans"; "heat the water on the stove"
• S: (v) heat (heat%2:40:00::) (provide with heat) "heat the house"
• S: (v) inflame (inflame%2:37:00::), stir up (stir_up%2:37:00::), wake (wake%2:37:00::), ignite (ignite%2:37:00::), heat (heat%2:37:00::), fire up (fire_up%2:37:00::) (arouse or excite feelings and passions) "The ostentatious way of living of the rich ignites the hatred of the poor"; "The refugees' fate stirred up compassion around the world"; "Wake old feelings of hatred"
• S: (v) heat (heat%2:30:00::), hot up (hot_up%2:30:02::), heat up (heat_up%2:30:01::) (gain heat or get hot) "The room heated up quickly"