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.
- stereo-
- stereobate
- stereochemical
- stereochemistry
- stereochrome
- stereochromic
- stereochromy
- stereogram
- stereograph
- stereographic
- stereographical
- stereographically
- stereography
- stereoisomer
- stereoisomeric
- stereoisomerism
- stereolithography
- stereologic
- stereological
- stereologically
- stereologist
- stereology
- stereomicroscope
- stereomicroscopic
- stereomicroscopy