A family of parasitic tongue worms (order Porocephalida, phylum Pentastomida) characterized by four hooks arranged in a curved line on either side of the mouth. Adults are found in the lungs of reptiles, and larvae or nymphs are found in the tissues of a great variety of vertebrates, including humans.
[G. poros, pore, + kephale, head]
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Examples: glitazone, GI cocktail, etc.