cuneiform UK /ˈkjuː.nɪ.fɔːm/US /kjuˈni.ə.fɔɹm/adjective 2noun 2forms 1 adjective2 •Having the form of a wedge; wedge-shaped, especially with a tapered end.About midway across the larger log a cuneiform notch or cut about six inches deep was made. — 1889 •Written in the cuneiform writing system.There, too, it was originally the vulgar script in contrast with the official cuneiform script employed for all official documents, compacts, etc. — 1911 noun2 •An ancient Mesopotamian writing system, adapted within several language families, originating as pictograms in Sumer around the 30th century BCE, evolving into more abstract and characteristic wedge shapes formed by a blunt reed stylus on clayen tablets. •A wedge-shaped bone, especially a cuneiform bone. formscuneiforms