first law of motion first lateran council • first law of thermodynamics · · · Info · Definitions · Synonyms · Characters · · first law of motion · · Text Common · · Latin · · Scripts 19 · · Length 5 · · Syllables Definitions · · · (noun) a body remains at rest or in motion with a constant velocity unless acted upon by an external force. Synonyms: first law of motion, Newton's first law of motion, Newton's first law. · · Noun Definition 1 Synonyms · · · newton's first law of motion · · Synonym 1 newton's first law · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 f latin small letter f U+0066 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 w latin small letter w U+0077