To convert rock or other material into granulite, a type of metamorphic rock formed under high temperature and pressure deep underground.
From granulite (itself from Latin granulum meaning 'small grain') plus the suffix -ize meaning 'to make or become.' The geological term granulite was coined in the 19th century to describe the grain-like texture of this rock type.
Geologists use this term to describe one of Earth's most dramatic transformations—rocks at the base of the continental crust get squeezed and heated so intensely that their minerals reorganize into a completely new texture, and this process is literally called 'making it granular' in its most extreme form.
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