| Noun | 1. | subphylum Pentastomida - tongue worms Arthropoda, phylum Arthropoda - jointed-foot invertebrates: arachnids; crustaceans; insects; millipedes; centipedes pentastomid, tongue worm - wormlike arthropod having two pairs of hooks at the sides of the mouth; parasitic in nasal sinuses of mammals phylum - (biology) the major taxonomic group of animals and plants; contains classes |