JMdict: 1513310

保温 【ほおん】

  1. [n,vs,vi,vt] retaining warmth; keeping heat in; heat insulation
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
保 Protect, Guarantee, Keep, Preserve, Sustain, Support ホ, ホウ たも.つ
温 Warm オン あたた.か, あたた.かい, あたた.まる, あたた.める, ぬく