A medical condition (possibly historical or fictional) characterized by grotesque facial or physical features; the quality or state of being gargoyle-like.
From gargoyle plus -ism (suffix forming nouns referring to conditions, doctrines, or states), creating a portmanteau suggesting a systemic gargoyle-like quality.
Gargoylism sounds like it could be a real medical term, but it's more likely literary or historical—doctors sometimes used striking animal or creature names to describe unusual conditions.
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