Plural of cermet; multiple composite materials made from combined ceramic and metal components.
Regular English pluralization of 'cermet' by adding '-s.' Retains the portmanteau structure of its singular form from ceramic + metal.
The development of different cermets in the 1950s-60s was essential for the space race—without heat-resistant cermets, the metallic parts of spacecraft and rockets would have failed during re-entry into Earth's atmosphere.
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