熱膨張係数 ねつぼうちょうけいすう Meanings Noun thermal expansion coefficient Kanji 熱 heat. Read as ネツ. 膨 swell. Read as ボウ. 張 stretch. Read as チョウ. 係 connection. Read as ケイ. 数 number. Read as スウ. Jinuma: Japanese Dictionary · Word lists