The present participle of corradiate; wearing away while radiating or spreading.
The present participle form of the rare verb 'corradiate,' formed by adding '-ing.' This participle form is likely even less common than the base verb.
English participles (-ing forms) are incredibly productive—you can almost create them from any verb, so 'corradiating' is technically valid even if nobody uses it, showing the generative power of grammar even for words that never quite became real.
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