三さん次じ元げん

noun, noun which may take the genitive case particle 'no'

three dimensions; 3D; three-dimensional

Standard term for three-dimensional space or objects; used in mathematics, physics, computer graphics, and everyday contexts.

• この映えい画がは三さん次じ元げんで見みると迫はく力りょくが違ちがう。

  This movie is much more impressive when watched in 3D.

• 三さん次じ元げんの座ざ標ひょうを計けい算さんする。

  Calculate the three-dimensional coordinates.

noun, noun which may take the genitive case particle 'no'

real world; IRL; in real life

Slang used in otaku and internet culture to refer to the real world, as opposed to the two-dimensional world of anime and manga. Often humorous or self-deprecating.

• 三さん次じ元げんの彼かの女じょが欲ほしいけど、なかなかできない。

  I want a real-life girlfriend, but it's not easy.

• オタクにとって三さん次じ元げんは厳きびしい場ば所しょだ。

  For otaku, the real world is a harsh place.