Definition - The use of circumlocution, i.e. indirect and roundabout language.

Example -
Four score and 20 years ago (i.e. 100 years ago)

Etymology -
The word derives from the Greek periphrazein, speak in a roundabout way (from peri, round about + phrazein, to express).

Oxford English Dictionary -
Its first citation is from 1533:
"A fayre fygure, … that is I trowe called periphrasis."
(More Apol. ix. Wks. 865/1)

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