1. a fuel made from renewable biological sources, such as vegetable oils or animal fats, that can be used in diesel engines as a substitute for or blend with petroleum diesel.
Usage: commonly used in environmental and energy contexts; often abbreviated as B100 when pure, or Bxx when blended (e.g., B20 is 20% biodiesel)

Examples

• Many cities are switching to biodiesel to reduce carbon emissions.
• Biodiesel can be produced from used cooking oil, making it a sustainable fuel option.
• The truck runs on a blend of biodiesel and conventional diesel.
• Biodiesel is less toxic and more biodegradable than petroleum-based fuels.
• Farmers can grow crops specifically for biodiesel production.
• The engine performed well after switching to B20 biodiesel blend.