noun🔗ShareルーメンIn the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm."The new desk lamp provides 800 lumens of light, making it much brighter for studying. "新しいデスクランプは800ルーメンの光を提供し、勉強にずっと明るくなりました。physicsenergytechnicalunitChat with AIVocabulary GamePractice Reading
noun🔗Share内腔The cavity or channel within a tube or tubular organ."The doctor inserted a small camera into the artery to examine the lumen for any blockages. "医師は、詰まりがないか内腔を調べるために、小さなカメラを動脈に挿入しました。anatomyorganphysiologymedicineChat with AIVocabulary GamePractice Reading
noun🔗Share内腔The cavity bounded by a plant cell wall."The plant cell's lumen, visible under the microscope, appeared as a clear space enclosed by the surrounding green cell wall. "顕微鏡下で観察できる植物細胞の内腔は、周囲の緑色の細胞壁に囲まれた透明な空間として現れた。biologyplantpartstructureChat with AIVocabulary GamePractice Reading
noun🔗Shareルーメン、管腔The bore of a tube such as a hollow needle or catheter."The doctor checked the IV line to make sure the lumen wasn't blocked. "医師は、ルーメンが詰まっていないことを確認するために、点滴ラインをチェックしました。medicineanatomypartdeviceChat with AIVocabulary GamePractice Reading
