기원紀元 origin; beginning 단원單元 chapter; unit 차원次元 level 환원還元 return; giving back; restoration 환원주의還元主義 reductionism 고차원高次元 high level; high dimension 고차원적高次元的 being high-level; being high-dimensional 고차원적高次元的 high-level; high-dimensional 기원전紀元前 B.C. 기원후紀元後 A.D. 다원론多元論 pluralism 다원론적多元論的 being pluralistic 다원론적多元論的 pluralistic 다원주의多元主義 pluralism 다원화多元化 pluralization 사차원四次元 fourth dimension; being fourth-dimensional 삼차원三次元 three dimensions; being three-dimensional 소단원小單元 small lesson unit 신기원新紀元 new era; new epoch 신원身元 identity 원금元金 principal 원기元氣 energy; vitality 원년元年 the first year 원단元旦 morning of the New Year's Day 원로元老 elder; doyen 원리금元利金 principal and interest 원사元士 sergeant major 원소元素 element 원수元帥 marshal 원수元首 head of state 원조元祖 founder of a family; first forefather 원체元體 extraordinarily; prominently 원흉元兇 ringleader 이원론二元論 dualism 이차원二次元 two dimensions; being two-dimensional 일원론一元論 monism 일원화一元化 unification 일차원一次元 one dimension