JMdict: 1543710

予防線 【よぼうせん】

  1. [n] defensive perimeter; defence line; defense line; defensive measures
  2. [n] precaution; safeguard; safety measure
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
予 Beforehand, Previous, Myself, I ヨ, シャ あらかじ.め 3
防 Ward Off, Defend, Protect, Resist ボウ ふせ.ぐ 5
線 Line, Track セン すじ 2