Meanings
Calque of French ballon d’essai (“small balloon released into the sky to determine the direction and tendency of winds in the upper air before a manned ascent in a larger balloon; (figuratively) prospective action to test acceptance”): ballon (“balloon”), essai (“trial, try; assay”).[1]
How to pronounce "trial balloon":
AU
A small balloon released into the sky to determine the direction and tendency of winds in the upper air before a manned ascent in a larger balloon; a ballon d'essai.
An idea, suggestion, or prospective action, product, etc., offered to an audience or group in order to test whether it generates acceptance or interest.
Example Sentences
1
The politician floated a trial balloon to gauge public opinion on his proposed policy.
2
Before announcing the new product, the company decided to release a trial balloon to test the market.
3
The management team sent out a trial balloon to see if employees were open to a change in the office dress code.
4
The director suggested a trial balloon of extending the play's run for another week.
5
The government leaked a trial balloon about potential tax hikes to see how the public would react.