軌道短半径 きどうたんはんけい Meanings Noun semi-minor axis (esp. in orbital matters) Kanji 軌 track. Read as キ. 道 road. Read as ドウ. 短 short. Read as タン. 半 half. Read as ハン. 径 diameter. Read as ケイ. Jinuma: Japanese Dictionary · Word lists