生物圏 せいぶつけん Meanings Noun biosphere; biome Kanji 生 life. Read as セイ. 物 thing. Read as ブツ. 圏 sphere. Read as ケン. Words containing 生物圏 生物圏保護区 (せいぶつけんほごく) biosphere reserve (UNESCO) Jinuma: Japanese Dictionary · Word lists