[ 'pɒlɪmaθ ]
■ noun a person of wide-ranging knowledge or learning.
Derivatives
~ic adjective
~y pə'lɪməθi noun
Origin
C17: from Gk polumathēs 'having learned much'.
POLYMATH
Meaning of POLYMATH in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004