(ぼう)

ぼう
prefix
prevention; protection against
1. prevention; protection against
Prefix indicating protection or prevention from something.
防災(ぼうさい)グッズを準備(じゅんび)しておく。
I prepare disaster prevention supplies.
(ぼう) + (さい) = disaster prevention
防音(ぼうおん)部屋(へや)練習(れんしゅう)している。
I'm practicing in a soundproof room.
(ぼう) + (おん) = soundproof
防犯(ぼうはん)カメラが設置(せっち)されている。
Security cameras are installed.
(ぼう) + (はん) = crime prevention

(ぼう)〜 is a prefix meaning 'prevention of' or 'protection against.'

COMMON COMPOUNDS:

  • 防災(ぼうさい) (disaster prevention)
  • 防犯(ぼうはん) (crime prevention)
  • 防音(ぼうおん) (soundproof)
  • 防水(ぼうすい) (waterproof)
  • 防火(ぼうか) (fireproof; fire prevention)
  • 防寒(ぼうかん) (protection against cold)
  • 防虫(ぼうちゅう) (insect repellent)
  • 防止(ぼうし) (prevention)
  • 防衛(ぼうえい) (defense)
  • 防御(ぼうぎょ) (defense; protection)

RELATED VERB:
(ふせ)ぐ (to prevent; to defend against) - the verb form uses kun'yomi.

NOTE:
(ぼう)〜 creates compound nouns indicating what is being prevented or protected against.