operating instructions operating expense • operating microscope · · · Info · Definitions · Synonyms · Characters · · operating instructions · · Text Common · · Latin · · Scripts 22 · · Length 7 · · Syllables Definitions · · · (noun) a manual usually accompanying a technical device and explaining how to install or operate it. Synonyms: instruction manual, instructions, book of instructions, operating instructions. · · Noun Definition 1 Synonyms · · · instruction manual · · Synonym 1 instructions · · Synonym 2 book of instructions · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 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 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 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