1. Either of two veins that drain the diaphragm
   - phrenic vein

Type of: vein, vena, venous blood vessel

• order Scleroparei
• order Scorpionida
• order Scrophulariales
• order Secotiales
• order Selaginellales
• order Siluriformes
• order Siphonaptera
• order Siphonophora
• irritably
• irritant
• irritate
• irritated
• irritatedly
• irritating
• irritatingly
• irritation
• irritative
• irrupt
• irruption
• irruptive
• IRS
• Irtish
• Irtish River
• Irtysh
• Irtysh River