单词	planation
释义	planation /pləˈneɪʃ(ə)n / noun [mass noun] The levelling of a landscape by erosion.These profiles show evidence for planation at the top of the Outer Plains close to the Inner SDR.... Anglo-American geomorphologists tend to the view that pediments are the result of either lateral planation by ephemeral, migrating streams issuing from bordering mountains, or sheet-flood erosion. Indications of planation near the Inner SDR might either indicate that this unit formed partly under subaerial conditions (subaerial seafloor spreading) or that an uplift episode occurred after its emplacement. Origin Late 19th century: from plane1 + -ation.
随便看	unplaced unplacid unplacing unplagued unplain unplait unplan unplaned unplanished unplank unplanked unplanned unplant unplantable unplanted unplantlike unplaster unplastered unplastic unplat unplatonically unplausible unplausibly unplayable unplayably

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。