noun🔗ShareلومنIn 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 light bulb in the kitchen is much brighter; it emits 800 lumens. "المصباح الكهربائي الجديد في المطبخ أكثر سطوعًا؛ إنه يبعث 800 لومن.physicsenergyunitscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareتجويفThe cavity or channel within a tube or tubular organ."The doctor examined the lumens of the patient's intestines to look for any blockages. "فحص الطبيب تجاويف أمعاء المريض للبحث عن أي انسدادات.anatomyorganphysiologymedicinebiologyChat with AIVocabulary GamePractice Reading
noun🔗ShareالتجويفThe cavity bounded by a plant cell wall."Under a microscope, the lumens of the plant cells looked like tiny empty compartments. "تحت المجهر، بدت تجاويف الخلايا النباتية وكأنها مقصورات فارغة صغيرة.plantbiologypartChat with AIVocabulary GamePractice Reading
noun🔗ShareتجويفThe bore of a tube such as a hollow needle or catheter."The doctor checked the lumens of the IV catheter to make sure they weren't blocked. "تحقق الطبيب من تجويف القسطرة الوريدية للتأكد من أنها غير مسدودة.medicineanatomyparttechnicaldeviceChat with AIVocabulary GamePractice Reading
