1. That is to say; in other words
   - i.e., ie

Encyclopedia: Id est

• fissiped mammal
• Fissipedia
• fissure
• fissure of Rolando
• fissure of Sylvius
• Fissurella
• Fissurella apertura
• Fissurellidae
• fist
• fistfight
• fistful
• fistic
• fisticuffs
• fisting
• fistmele
• fistula
• fistular
• Fistularia
• Fistulariidae
• fistulate
• Fistulina
• Fistulina hepatica
• Fistulinaceae
• fistulous
• fistulous withers