sub·cal·i·ber 
(sŭb-kălə-bər)
(sŭb-kălə-bər)adj.
1. Smaller in caliber than the barrel of the gun from which it was fired. Used of projectiles.
2. Relating to or firing such projectiles.
- spermatocide
- spermatocyte
- spermatogenesis
- spermatogenetic
- spermatogenic
- spermatogonial
- spermatogonium
- spermatophoral
- spermatophore
- spermatophyte
- spermatophytic
- spermatorrhea
- spermatorrhoea
- spermatozoal
- spermatozoan
- spermatozoic
- spermatozoid
- spermatozoon
- sperm cell
- spermi-
- spermicidal
- spermicide
- spermidine
- spermine
- spermiogenesis