直ちょく線せん補ほ間かんMeaningsNoun1. linear interpolation; straight-line interpolationKanji used直straight線line補supplementary間intervalComposed of直ちょく線せんstraight lineNoun補ほassistant ...; probationary ...Suffix間かんinterval; period of time; among; between; inter-; good opportunity; chance; estrangement; discord; alienation; …Noun