A naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.
- The biggest deposits of the metal ore in the world are to be found in the eastern Congo.
- Mercury is now extracted from its ores by a method that has been used for hundreds of years.
- The mountain massifs to the east of the Rhône, however, were less rich in metal ores.
Old English ōra 'unwrought metal'; influenced in form by Old English ār 'bronze' (related to Latin aes 'crude metal, bronze').