線せん膨ぼう張ちょう係けい数すうMeaningsNoun1. coefficient of linear expansionKanji used線line膨bulge張lengthen係be involved with数numberComposed of線せんline; stripe; stria; line (e.g. telephone line); wire; ray (e.g. X-ray); beam; line (e.g. of a railroad); track; route; …Noun膨ぼう張ちょうexpansion; swelling; increase; growthNoun係けい数すうcoefficient; factor; proportional constant; modulusNoun