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Meaning of landform

land•form

Pronunciation: (land'fôrm"), [key]
— n. Geol.
  1. a specific geomorphic feature on the surface of the earth, ranging from large-scale features such as plains, plateaus, and mountains to minor features such as hills, valleys, and alluvial fans.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.