Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of several hard, strong alloys of iron, aluminum, nickel, cobalt and sometimes copper, niobium, or tantalum, used to make strong permanent magnets.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An alloy of aluminium, nickel and cobalt (named for their chemical symbols Al, Ni and Co respectively), sometimes alloyed with smaller amounts of iron, copper, titanium and used primarily in the manufacture of magnets.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. trade name for an alloy used to make high-energy permanent magnets; contains aluminum and iron and nickel plus cobalt or copper or titanium

Etymologies

al(uminum) + ni(ckel) + co(balt).
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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