sub·phy·lum 
(sŭbfī′ləm)
(sŭbfī′ləm)n. pl. sub·phy·la (-lə)
A taxonomic category of related organisms ranking below a phylum and above a class.
- proglottic
- proglottid
- proglottidean
- proglottis
- prognathic
- prognathism
- prognathous
- prognosis
- prognostic
- prognosticate
- prognostication
- prognosticative
- prognosticator
- prograde
- program
- program director
- programed
- programer
- programing
- programmability
- programmable
- programmatic
- programmatically
- programme
- programmed