Noun, Noun which may take the genitive case particle 'no'
three dimensions; 3D; 3-D
クモはいつも自分たちの巣を3次元に織る。Spiders always weave their webs in three dimensions. real world; IRL; in real life
SlangJocular, humorous termas opposed to the two dimensions of anime and manga
Also written 三次元【さんじげん】