maar

maar

[mahr]
noun Geology.
a circular volcanic landform resulting from explosive ash eruptions.

Origin:
1820–30; < German Maar a depression filled with standing water (especially in the Eifel district)

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
maar (mɑː) [Click for IPA pronunciation guide]
 
n , pl maars, maare
(sometimes capital) a coneless volcanic crater that has been formed by a single explosion
 
[C19: from German]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Maar is always a great word to know.
So is gobo. Does it mean:
a chattering or flighty, light-headed person.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
American Heritage
Science Dictionary
maar   (mär)  Pronunciation Key 
A broad, shallow, generally flat-floored volcanic crater that is often filled with water. Maars usually form from explosive eruptions caused by the heating and boiling of groundwater that is invaded by rising magma.
The American Heritage® Science Dictionary
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