noun
a type of fuel made from natural sources such as vegetable oil or animal fat, used as an alternative to traditional petroleum-based diesel
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Biodiesel is a renewable fuel made from vegetable oils or animal fats.
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Have you tried using biodiesel in your car yet?
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I heard biodiesel is the way to go if you want to be eco-friendly.
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Switching to biodiesel is like giving your car a healthy diet.