精子 せいし sperm #7,055 Meanings noun, biology sperm; spermatozoon Its kanji 精 セイ、ショウ · しら.げる、くわ.しい refined, ghost, fairy, energy, vitality, semen, excellence, purity, skill 子 シ、ス、ツ · こ、-こ、ね child, sign of the rat, 11PM-1AM, first sign of Chinese zodiac