windhole - zwitter
- yellow orpiment
- yellow ozokerite
- yellow pyrite
- yellow ratebane
- yellow soil
- yellow stone
- yellow substance
- yellow wash
- yellow-green algae
- yellow-ochre superficial oxidation
- yellowfin tuna
- Yellowstone
- yenite
- yentnite
- Yeovilian
- yeth
- yield
- yield of coal
- yield of preparation products
- yield of water of rock