proteanPronunciation: /ˈprəʊtɪən, prəʊˈtiːən/Definition of protean adjective tending or able to change frequently or easily:it is difficult to comprehend the whole of this protean subject able to do many different things; versatile:protean thinkers who scan the horizons of work and societyOrigin: late 16th century: from Proteus + -anprotean in other Oxford dictionaries Definition of protean in the US English dictionary