数すう直ちょく線せんMeaningsNoun1. number line (e.g. on a graph); real number lineKanji used数number直straight線linePitch accentすうちょくせんComposed of数すうseveral; a few; a number of; number; quantity; amount; counting; calculation; figures; numbers; …Prefix直ちょく線せんstraight lineNoun