third law of motion third lateran council • third law of thermodynamics · · · Info · Definitions · Synonyms · Characters · · third law of motion · · Text Common · · Latin · · Scripts 19 · · Length 5 · · Syllables Definitions · · · (noun) action and reaction are equal and opposite. Synonyms: third law of motion, Newton's third law of motion, Newton's third law, law of action and reaction. · · Noun Definition 1 Synonyms · · · newton's third law of motion · · Synonym 1 newton's third law · · Synonym 2 law of action and reaction · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 f latin small letter f U+0066 h latin small letter h U+0068 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 t latin small letter t U+0074 w latin small letter w U+0077