Ballon-d-essai definition

A policy put forward to test reactions; something designed to test the waters, an experimental measure. [from 19th c.]
noun
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Other Word Forms

Noun

Singular:
ballon-d-essai
Plural:
ballons-d-essai

Origin of ballon-d-essai

  • From French ballon d'essai.

    From Wiktionary