Definition of biofuel
: a fuel (such as wood or ethanol) composed of or produced from biological raw materials — compare fossil fuel
biofuel was our Word of the Day on 01/13/2008. Hear the podcast!
Recent Examples of biofuel from the Web
Most gasoline contains 10% ethanol, a biofuel made from corn.
As with the millions of flex fuel vehicles out there, being read for biofuel is one thing, and actually using the fuel is another.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biofuel'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
Since the early 19th century, "fossil fuel" has been used to refer to fuels such as coal, oil, and natural gas which are formed from the remains of plants and animals which have lain in the earth for millions of years. In the 1970s, a new word, "biofuel," began to be used to describe a different kind of fuel, one taken from more contemporary organic matter. These fuels include ethanol, which can be derived from such products as corn and sugarcane, and biodiesel, which can be formed from vegetable oils. These organic sources are reflected in the prefix, bio-, meaning "life" or "living organisms or tissue." The prefix bio- was borrowed from the Greek bios, meaning "mode of life."
First Known Use of biofuel
Seen and Heard
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