Resembling a worm or helminth in shape or appearance; worm-like.
From Greek 'helminthos' (worm) plus 'eidos' (form/appearance), forming an adjective meaning 'worm-shaped.' This descriptive term applies to anything structurally similar to parasitic worms.
Medical students learn that some tumors or cysts can look helminthoid under a microscope—which initially caused diagnostic confusion when early pathologists thought they'd found parasites in tissue samples that were actually abnormal growths.
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