ice sheet 
noun
A layer of ice covering an extensive tract of land for a long period of time.Several scientists have proposed that the southern part of the Greenland ice sheet disappeared during the period of maximum interglacial warmth....
- Younger cited evidence for extensive ground freezing in SE England during the Devensian, beyond the limit of the Devensian ice sheet.
- Later, as the permafrost melted and the ice sheet warmed as a result of climatic amelioration, the ice would have become wetbased.
- chewer
- chewiness
- chewing gum
- chewing tobacco
- chew someone out
- chew (someone's) ass
- chew something over
- chew something up
- chew stick
- chew the cud
- chew the fat (or rag)
- chew the scenery
- chewy
- chewy on your boot
- Cheyenne
- Cheyenne River
- Cheyne–Stokes breathing
- chez
- CHF
- chhaap
- Chhattisgarh
- chhi-chhi
- chi
- chia
- chiack