JMdict: 2851558

保温性 【ほおんせい】

  1. [n] ability to retain heat (of clothing, etc.); (degree of) thermal insulation; heat-insulating property
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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
性 Sex, Gender, Nature セイ, ショウ さが