勢 せい Meanings Noun strength; power; energy military strength; army; (number of) troops Kanji 勢 force. Read as セイ. Words containing 勢 勢力 (せいりょく) influence 国勢調査 (こくせいちょうさ) (national) census 姿勢 (しせい) posture And 168 more. Jinuma: Japanese Dictionary · Word lists