因 いん Meanings Noun cause; factor hetu (direct cause, esp. as opposed to indirect conditions) See also: 縁 (えん). the basis of one's argument (in hetuvidya) See also: 因明 (いんみょう). Kanji 因 cause. Read as イン. Words containing 因 原因 (げんいん) cause 要因 (よういん) main cause 因子 (いんし) factor And 145 more. Jinuma: Japanese Dictionary · Word lists