altiplanation Geol.
(ˌæltɪpləˈneɪʃən)
[f. alti- + planation.]
(See quot.)
| 1916 H. M. Eakin Yukon-Koyukuk Region 78 The author has suggested the term ‘altiplanation’ to designate a special phase of solifluction that, under certain conditions, expresses itself in terrace-like forms and flattened summits and passes that are essentially accumulations of loose rock materials. |