mach macguffin • machaeranthera · · · Info · Definitions · Characters · · mach · · Text Latin · · Script 4 · · Length 1 · · Syllables Definitions · · · (noun) Austrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916). Synonyms: Mach, Ernst Mach. · · Noun Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 m latin small letter m U+006D