Protean \Pro"te*an\, a. 1. Of or pertaining to Proteus; characteristic of Proteus. `` Protean transformations.'' --Cudworth. 2. Exceedingly variable; readily assuming different shapes or forms; as, an am[oe]ba is a protean animalcule. web1913

protean adj : taking on different forms; "eyes...of that baffling protean gray which is never twice the same" wn