Meaning & use
roughage
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The fibrous, largely indigestible part of plant food that aids digestion, also called dietary fiber.
See it in a sentence
Whole grains and vegetables are good sources of roughage.
The doctor recommended adding more roughage to his diet to ease constipation.
A note on using this word
An older, more everyday term for what nutritionists now more precisely call 'dietary fiber.'
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