引力圏 いんりょくけん Meanings Noun gravitational field (of a celestial body); sphere of gravitation; gravisphere See also: 重力場 (じゅうりょくば). Kanji 引 pull. Read as イン. 力 power. Read as リョク. 圏 sphere. Read as ケン. Word lists Astronomy Jinuma: Japanese Dictionary · Word lists