| acanthoid | (adjective) shaped like a spine or thorn | Synonyms: acanthous, spinous |
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| conchoid | (noun) Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts). | - |
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| haemorrhoid | (noun) venous swelling external or internal to the anal sphincter | Synonyms: hemorrhoid, piles |
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| hemorrhoid | (noun) venous swelling external or internal to the anal sphincter | Synonyms: haemorrhoid, piles |
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| lymphoid | (adjective) resembling lymph or lymphatic tissues | - |
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| paratyphoid | (noun) any of a variety of infectious intestinal diseases resembling typhoid fever | Synonyms: paratyphoid fever |
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| scaphoid | (adjective) shaped like a boat | Synonyms: navicular |
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| typhoid | (noun) serious infection marked by intestinal inflammation and ulceration; caused by Salmonella typhosa ingested with food or water | Synonyms: enteric fever, typhoid fever |
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