[hawr-nee-toh; Spanish awr-nee-taw]
noun, plural hornitos [hawr-nee-tohz; Spanish awr-nee-taws] . Geology.
a low oven-shaped mound of congealed lava, common in some volcanic districts, emitting hot smoke and vapors in the final stages of activity.

1820–30; < Spanish, equivalent to horn(o) oven (< Latin furnus, fornus; see furnace) + -ito diminutive suffix

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hornito   (hôr-nē'tō)  Pronunciation Key 
A low mound of matter ejected from a volcano, sometimes emitting smoke or vapor.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Aerial views of new spattering hornito in rootless shield complex.
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