1. In some classifications considered a superorder comprising the Cypriniformes and the Siluriformes
   - Ostariophysi

Type of: malacopterygian, soft-finned fish

• kidnapper
• kidnapping
• kidney
• kidney bean
• kidney begonia
• kidney disease
• kidney failure
• kidney fern
• kidney pie
• kidney stone
• kidney vetch
• kidney wort
• kidney-shaped
• kidology
• kidskin
• kidult
• kielbasa
• Kierkegaard
• kieselguhr
• kieserite
• Kieslowski
• Kiev
• Kigali
• Kiggelaria
• Kiggelaria africana