立りっ体たい鏡きょうりったいきょうMeanings1nounstereoscopeA device for viewing two slightly different images to create a three-dimensional effect. Technical term.立りっ体たい鏡きょうで昔むかしの写しゃ真しんを見みると、風ふう景けいが立りっ体たい的てきに見みえる。When you look at old photos through a stereoscope, the scenery appears three-dimensional.