The use of indirect and circumlocutory speech or writing.
The politician's speech was full of periphrasis, making it difficult to understand his actual stance on the issue.
A roundabout way of speaking or writing, often used to avoid saying something directly.
Instead of saying 'he died,' she used a periphrasis, saying 'he passed away to a better place.'
In linguistics, a phrase used to express a grammatical meaning that would otherwise be conveyed by inflection (e.g., using separate words rather than a bound morpheme).
In English, 'more beautiful' is a periphrasis for the comparative form 'prettier'.