isograd
[ ī′sə-grăd′ ]
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A line on a map connecting points on the Earth where metamorphism of rocks occurred under the same pressure and temperature conditions. These lines are established on the basis of the distribution of index minerals and are useful in reconstructing the tectonic history of a given region.
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The rainy weather could not ________ my elated spirits on my graduation day.
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Words nearby isograd
isogon, isogonal, isogonal line, isogonic, isogonic line, isograd, isogradient, isograft, isogram, isograph, isogriv
The American Heritage® Science Dictionary
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