The phrase "high dietary fiber" means that a food or diet contains a lot of a substance called fiber, which is found in plants. Fiber helps with digestion and can keep you full for longer, which is good for your health. Full definition
List of 100 foods with highest dietary fiber content. (dietgrail.com)
Previously, studies had found that whole grains and high dietary fibers carried health benefits such as glycemic control and insulin sensitivity. (healthtestexpress.com)
Many of these formulas have high dietary fiber volume to help keep your cat's digestive system working properly so it can pass ingested hair before it has a chance to accumulate. (kittycatter.com)