Dictionary/精せいSei精 (Sei) is a Japanese noun meaning “spirit, sprite, nymph, energy”.Meaningsnounspirit; sprite; nymphnounenergy; vigor (vigour); strengthnounfine detailsnounsemenKanji in 精精refinedRelated words詳しいdetailed精一杯the best one can do精神mind精々at the most精神的mental妖精fairy精密precise精製refining水晶(rock) crystal精度precision精鋭elite精進concentration