Third-person singular present tense: removes fat from something, especially food or materials.
From de- (remove) + fat + -s (verb ending). This straightforward compound word emerged from practical food preparation and industrial processing terminology.
The word 'defat' became essential industrial vocabulary in the 20th century as food processing exploded—companies needed ways to describe removing unwanted fats from everything from cocoa to leather. Language grows from real workplace needs.
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