euphuism
Concise Oxford English Dictionary © 2008 Oxford University Press:
euphuism /ˈjuːfjʊɪz(ə)m/
▶noun formal an artificial, highly elaborate way of writing or speaking.
– derivatives
euphuist noun,
euphuistic adjective,
euphuistically adverb.
euphuist noun,
euphuistic adjective,
euphuistically adverb.
– origin C16: with ref. to the elevated style of John Lyly's prose romance Euphues.
'euphuism' also found in these Oxford entries:

