internal-combustion internal spermatic artery • internal-combustion engine · · · Info · Definitions · Characters · · internal-combustion · · Text Common · · Latin · · Scripts 19 · · Length 6 · · Syllables Definitions · · · (noun) the combustion of fuel inside a cylinder (as in an internal-combustion engine). Synonyms: internal combustion. · · Noun Definition 1 Characters · · - 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 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