polymathic

polymath +‎ -ic

polymathic (comparative more polymathic, superlative most polymathic)

1. Pertaining to polymathy; acquainted with many branches of learning.

   Synonym: multiscious (rare)

   • 2014 September 5, Rob Nixon, “Future Footprints”, in New York Times‎:

     Is it uncharitable to want a book that achieves so much to do more? Perhaps. Taken on its own terms, “The Human Age” is a dazzling achievement: immensely readable, lively, polymathic, audacious.

• polymathic in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

• ampholytic