firmware firmness of purpose • firn · · · Info · Definitions · Synonyms · Characters · · firmware · · Text Latin · · Script 8 · · Length 2 · · Syllables Definitions · · · (noun) (computer science) coded instructions that are stored permanently in read-only memory. Synonyms: microcode. · · Noun Definition 1 Synonyms · · · microcode · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D r latin small letter r U+0072 w latin small letter w U+0077