One of the mysteries of the English language finally explained.
A trademark for: a method of testing metal parts for defects by magnetizing them and applying a magnetic powder which adheres to areas of flux leakage; the magnetic powder so used. Usually attributive.
1930s; earliest use found in The Engineer. From magn- + -a- connective + flux.
with object To test using the magnaflux method.
1950s; earliest use found in The Manchester Guardian. From Magnaflux.
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