Last Updated
：2025/11/25
trial balloon
IPA(Pronunciation)
Noun
historical
figuratively
idiomatic
Japanese Meaning
（航空史における用語）有人の大気球を用いた飛行の前に、上層大気の風向や風勢を確認するために放たれる、小型の試験用気球。
Sense（1）
（ plural ）
Quizzes for review
(aeronautics, historical) 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.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
trial balloon
Before attempting the ascent, the aeronauts released a trial balloon to gauge the upper-air winds.
See correct answer
Before attempting the ascent, the aeronauts released a trial balloon to gauge the upper-air winds.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
