metal

1. (heading) Chemical elements or alloys, their ores, and the mines where their ores come from.Examples: "Manganism has been known about since the 19th century, when miners exposed to ores containing manganese, a silvery metal, began to totter, slur their speech and behave like someone inebriated."; "Earth is surrounded by a magnetosphere — an invisible bubble of magnetism generated by the powerful churning of molten metals at Earth’s core."countableuncountable

2. (heading) Chemical elements or alloys, their ores, and the mines where their ores come from.Examples: "But then I had the flintlock by me for protection. ¶ There were giants in the days when that gun was made; for surely no modern mortal could have held that mass of metal steady to his shoulder. The linen-press and a chest on the top of it formed, however, a very good gun-carriage; and, thus mounted, aim could be taken out of the window[…]."countableuncountable

3. (heading) Chemical elements or alloys, their ores, and the mines where their ores come from.Examples: "Most of the matter in stars is hydrogen and helium, and the metals (including carbon, nitrogen, oxygen, and so on) were cooked up inside stars."; "2008, Lunar and Planetary Institute, Geochemical Society, Oxygen in the solar system, Mineralogical Society of Amer →ISBN Thus, for the remaining elements, including oxygen, the solid phase appears to be important. In fact, at a metallicity of Z=0.02, and with a gas-to-dust ratio of 100, about half of the metals — including oxygen — are contained in the solid phase."; "Metals include oxygen and carbon which means that water and organic molecules would have been abundant in the early universe, perhaps paving the way for the emergence of life within a couple of billion years of the Big Bang."countableuncountable

4. (heading) Chemical elements or alloys, their ores, and the mines where their ores come from.Examples: "One of the most important tasks was the metalling of the roads, and the dumping of metal beside them in parts where it was impossible to lay it, in order that work might commence with the assault. The surface of the roads was good, but only because the Division had been holding a front so wide, which made the traffic upon them relatively light."countableuncountable

5. (heading) Chemical elements or alloys, their ores, and the mines where their ores come from.countableuncountable

6. (heading) Chemical elements or alloys, their ores, and the mines where their ores come from.Examples: "slaves[…]and persons condemned to metals"countableobsoleteuncountable