ロッシュ限界 ロシュげんかい Also written ロッシュげんかい, ロシュ限界 Meanings Noun Roche limit; Roche's limit (closest that a natural satellite can come to the center of a planet without disintegrating due to tidal forces) Kanji 限 limit. Read as ゲン. 界 realm. Read as カイ. Jinuma: Japanese Dictionary · Word lists