A groove-like or pit-like attachment structure on the heads of certain tapeworms and other parasitic organisms, used to grip the host's tissue.
From Greek 'bothros' meaning pit or groove. Used in parasitology as a technical term for specific anatomical features.
The bothrium is a mechanical marvel of parasitic evolution—tapeworms evolved these grooves specifically to grip intestinal walls without penetrating them too deeply, a balance that lets them survive in a host for years.
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