1. Representing the furthest possible extent of analysis or division into parts
   "a feeling is a simple and undecomposable mental state"
   - unanalyzable [N. Amer], unanalysable [Brit, Cdn]

See also: simple

• petrol
• petrol bomb
• petrol engine
• petrol gage
• petrol gauge
• petrol line
• petrol pump
• petrol station
• petrol tank
• petrolatum
• petrolatum gauze
• petroleum
• petroleum future
• petroleum geologist
• petroleum geology
• petroleum jelly
• petroleum refinery
• petrological
• petrologist
• petrology
• Petromyzon
• Petromyzon marinus
• Petromyzoniformes
• Petromyzontidae
• Petronas Towers