To corrade or wear away; to radiate or spread while eroding gradually.
Possibly from 'corrade' plus '-iate,' or from 'co-' plus 'radiate,' though this is a very rare term with unclear modern usage. May be an obsolete or highly technical variant.
This word is so rare that even most dictionaries don't include it—it's a ghost word in English, possibly created by one scientist and never quite catching on, reminding us that not every combination of roots becomes a permanent part of the language.
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