heat engine heat energy • heat-engine cycle · · · Info · Definitions · Synonyms · Antonyms · Characters · · heat engine · · Text Common · · Latin · · Scripts 11 · · Length Definitions · · · (noun) any engine that makes use of heat to do work. · · Noun Definition 1 Synonyms · · · heat · · Synonym 1 heat energy · · Synonym 2 hotness · · Synonym 3 high temperature · · Synonym 4 warmth · · Synonym 5 passion · · Synonym 6 estrus · · Synonym 7 oestrus · · Synonym 8 rut · · Synonym 9 heating system · · Synonym 10 heating plant · · Synonym 11 heating · · Synonym 12 heat up · · Synonym 13 inflame · · Synonym 14 stir up · · Synonym 15 wake · · Synonym 16 ignite · · Synonym 17 fire up · · Synonym 18 hot up · · Synonym 19 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 i latin small letter i U+0069 n latin small letter n U+006E t latin small letter t U+0074