cuneiform
Pronunciation: /ˈkjuːnɪfɔːm, kjuːˈneɪɪfɔːm/
adjective
- 1denoting or relating to the wedge-shaped characters used in the ancient writing systems of Mesopotamia, Persia, and Ugarit, surviving mainly on clay tablets: a cuneiform inscription

Origin:
late 17th century: from French cunéiforme or modern Latin cuneiformis, from Latin cuneus 'wedge'