| subphylum | (n) (biology) a taxonomic group ranking between a phylum and a class |
| benign prostatic hyperplasia | (n) enlarged prostate; appears to be part of the natural aging process, Syn. BPH |
| cephalochordata | (n) lancelets, Syn. subphylum Cephalochordata |
| pentastomida | (n) tongue worms, Syn. subphylum Pentastomida |
| urochordata | (n) tunicates, Syn. Urochorda, subphylum Tunicata, Tunicata, subphylum Urochorda, subphylum Urochordata |
| vertebrata | (n) fishes; amphibians; reptiles; birds; mammals, Syn. Craniata, subphylum Vertebrata, subphylum Craniata |