grain growth

noun Metallurgy.
a tendency of certain grains to grow and absorb others when heated under certain conditions.

Origin:
1925–30

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
These alloys also showed enhanced grain growth rates.
When the sample is heated, the grain boundaries become mobile and grain growth takes place.
Accelerated grain growth in dense, hot-pressed alumina has been demonstrated.
The right-hand photo shows some columnar epitaxial grain growth in the fusion zone.
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