heat energy heat-cracked • heat engine · · · Info · Definitions · Synonyms · Antonyms · Characters · · heat energy · · Text Common · · Latin · · Scripts 11 · · Length Definitions · · · (noun) a form of energy that is transferred by a difference in temperature. Synonyms: heat. · · Noun Definition 1 Synonyms · · · heat · · Synonym 1 hotness · · Synonym 2 high temperature · · Synonym 3 warmth · · Synonym 4 passion · · Synonym 5 estrus · · Synonym 6 oestrus · · Synonym 7 rut · · Synonym 8 heating system · · Synonym 9 heating plant · · Synonym 10 heating · · Synonym 11 heat up · · Synonym 12 inflame · · Synonym 13 stir up · · Synonym 14 wake · · Synonym 15 ignite · · Synonym 16 fire up · · Synonym 17 hot up · · Synonym 18 Antonyms · · · cool · · Antonym 0 chill · · Antonym 1 cool down · · Antonym 2 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079