aetiology or (US) etiology /ē-ti-olˈə-ji/

1. The science or philosophy of causation
2. An inquiry into the origin or causes of anything
3. The medical study of the causation of disease

aetiologˈical adjective

• nailed
• nailed on
• nail enamel
• nail enamels
• nailer
• naileries
• nailers
• nailery
• nail file
• nail files
• nail gun
• nail guns
• nail-head
• nail-headed
• nail-heads
• nail-head-spar
• nail-hole
• nail-holes
• nailing
• nailings
• nailless
• nail one's colours to the mast
• nail polish
• nail polishes
• nail punch