quiddity /kwidˈi-ti/ or (archaic) quiddit /kwidˈit/

1. The inherent nature or essence of anything
2. Any trifling nicety
3. A quibble

quiddˈitātive adjective

• Pyrethrums
• pyretic
• pyretologies
• pyretology
• pyretotherapies
• pyretotherapy
• Pyrex
• pyrexia
• pyrexial
• pyrexias
• pyrexic
• pyrheliometer
• pyrheliometers
• pyrheliometric
• pyridine
• pyridines
• pyridoxal
• pyridoxals
• pyridoxin
• pyridoxine
• pyridoxines
• pyridoxins
• pyriform
• pyrimethamine
• pyrimethamines