まんねん Also written 万年, よろずとせ, 万歳 Meanings Noun ten thousand years; eternity Noun prefix perennial; perpetual Words containing まんねん まんねんろう rosemary こもちまんねんぐさ Sedum bulbiferum (species of stonecrop) おのまんねんぐさ needle stonecrop (Sedum lineare) And 3 more. Jinuma: Japanese Dictionary · Word lists