A very small cup-shaped structure; a diminutive form of cotyla used in specialized anatomical description.
From cotyla + -iscus (a Latin diminutive suffix). The -iscus ending indicates something is a tiny version, as in 'Italicized' or historical terms for small things.
The -iscus suffix is rare in modern English but appears in scientific names where extreme smallness matters—calling something a cotyliscus tells you it's not just small but specifically a miniature cup-like structure.
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