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or pentastome

[pen-tuh-stoh-mid] /ˌpɛn təˈstoʊ mɪd/
noun, Zoology.
Origin of pentastomid
1905-10; < New Latin Pentastomida name of the class of tongue worms, equivalent to Pentastom(um) a genus name (penta- penta- + -stomum < Greek -stomon, neuter of -stomos -stomous) + -ida -ida

tongue worm

any wormlike invertebrate of the phylum Pentastomida (or subphylum of Arthropoda), having two pairs of hooks at the sides of the mouth: all are parasitic, some in the respiratory tracts of mammals.
Also called pentastome, pentastomid.
1635-45 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for pentastome

tongue worm

(vet science) a parasitic worm, Linguatula serrata, found in the nose of dogs, so called because of the shape of the worm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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pentastome in Science
pentastome (pěn'tə-stōm') also pentastomid
See tongue worm.
tongue worm  
Any of various small, colorless, tongue-shaped, wormlike invertebrates of the group Pentastoma, which is considered by many zoologists to be a phylum intermediate in evolutionary development between the annelids and arthropods. Tongue worms are parasites that live embedded in the respiratory systems of vertebrates, especially reptiles and also humans, in tropical regions. They have simple nervous and digestive systems but lack circulatory and respiratory systems. Also called pentastome.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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