sub·class 
(sŭbklăs′)
(sŭbklăs′)n.
1. Biology A taxonomic category of related organisms ranking below a class and above an order.
2. A subdivision of a set or class.
- pneumatics
- pneumato-
- pneumatograph
- pneumatograph
- pneumatologic
- pneumatological
- pneumatologist
- pneumatology
- pneumatolysis
- pneumatolytic
- pneumatometer
- pneumatometry
- pneumatophore
- pneumectomy
- pneumectomy
- pneumo-
- pneumobacillus
- pneumococcal
- pneumococcus
- pneumoconiosis
- pneumoconiotic
- pneumocystis
- pneumogastric
- pneumogastric nerve
- pneumograph