千分 せんぶん Meanings Noun, の-adjective division by 1000; one-thousandth Kanji 千 thousand. Read as セン. 分 part. Read as ブン. Words containing 千分 千分率 (せんぶんりつ) permillage 千分比 (せんぶんひ) rate per thousand Jinuma: Japanese Dictionary · Word lists