a type of glass containing a high proportion of lead within crystallized quartz, used esp. for decorative items
The composition of lead crystal is 54-65% silicon dioxide (SiO2), 18-38% lead oxide (PbO), 13-15% soda (Na2O) or potash (K2O), and other oxides and it has a high refractive index.
[led-id] /ˈlɛd ɪd/ adjective 1. (of gasoline) containing tetraethyllead. /ˈlɛdɪd/ adjective 1. (of windows) composed of small panes of glass held in place by thin grooved strips of lead: leaded lights 2. (of petrol) containing tetraethyl lead in order to improve combustion
[led] /lɛd/ noun, Chemistry. 1. a brown crystalline compound, PbO 2 , toxic, insoluble in water and alcohol, soluble in glacial acetic acid: used as an oxidizing agent, in lead-acid batteries, and in analytical chemistry.
- Leaded coffee
noun phrase Coffee with caffeine, as distinct from decaffeinated coffee: Coffee? You want leaded or unleaded? (1980s+)
[led-n] /ˈlɛd n/ adjective 1. inertly heavy like ; hard to lift or move: a leaden weight; leaden feet. 2. dull, spiritless, or gloomy, as in mood or thought: leaden prose; a leaden atmosphere. 3. of a dull gray color: leaden skies. 4. oppressive; heavy: a leaden silence. 5. sluggish; listless: They moved at a […]