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The word "cataract" comes from the Greek word καταρρέω ("to flow down"), although the original Greek term was the plural-only Κατάδουποι. However, contrary to this, none of the Nile's six primary cataracts could be accurately described as waterfalls, and given a broader definition, this is the same with many of the minor ...
Cataract: A large, powerful waterfall. [1] Multi-step: A series of waterfalls one after another of roughly the same size each with its own sunken plunge pool. [1] Block: Water descends from a relatively wide stream or river. [1] [2] Cascade: Water descends a series of rock steps. [1] [2] Segmented: Distinctly separate flows of water form as it ...
Waterfalls are sometimes interchangeably referred to as "cascades" and "cataracts", though some sources specify a cataract as being a larger and more powerful waterfall [1] [4] [5] and a cascade as being smaller. [6] A plunge pool is a type of stream pool formed at the bottom of a waterfall. [7] A waterfall may also be referred to as a "foss ...
Posterior capsular opacification, also known as after-cataract, is a condition in which months or years after successful cataract surgery, vision deteriorates or problems with glare and light scattering recur, usually due to thickening of the back or posterior capsule surrounding the implanted lens, so-called 'posterior lens capsule opacification'.
This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...
Merriam-Webster's Geographical Dictionary (Webster's Geographical Dictionary, Webster's New Geographical Dictionary) is a gazetteer by the publisher Merriam-Webster. The latest edition was released in 2001, edited by Daniel J. Hopkins and contained over 54,000 entries. The first edition was published in 1949 and the second edition in 1972.
Dry Falls is a 3.5-mile-long (5.6 km) scalloped precipice with four major alcoves, in central Washington scablands.This cataract complex is on the opposite side of the Upper Grand Coulee from the Columbia River, and at the head of the Lower Grand Coulee, northern end of Lenore Canyon. [1]
The northern part of this area, stretching from the First Cataract south to Maharraqa, was known as the Dodekaschoinos or Dodecaschoenus (Δωδεκάσχοινος, "Land of the Twelve Schoinoi"). In the Ptolemaic and Roman periods the Dodekaschoinos was often annexed to Egypt or controlled from it, and the rest of the Triakontaschoinos ...