internal-combustion engine internal-combustion • internal-use-only · · · Info · Definitions · Synonyms · Characters · · internal-combustion engine · · Text Common · · Latin · · Scripts 26 · · Length 8 · · Syllables Definitions · · · (noun) a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine. Synonyms: internal-combustion engine, ICE. · · Noun Definition 1 Synonyms · · · ice · · Synonym 1 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075