Urca process(redirected from Urca-process)
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Urca process[′ər·kə ‚prä‚ses]
A series of nuclear reactions, chiefly among the iron group of elements, that are postulated as a cause of stellar collapse, due to the energy lost to neutrinos that are rapidly formed in the reactions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.