diesel exhaust fluid

English

Etymology

From diesel exhaust +‎ fluid. From being a liquid, which is a class of fluid, used for the treatment of the exhaust from diesel internal combustion engines.

Noun

diesel exhaust fluid (countable and uncountable, plural diesel exhaust fluids)

  2. (automotive) A liquid used to reduce controlled emissions from the exhaust of diesel engines.
    Alternative form: DEF (initialism)
    Hypernyms: liquid < fluid

Derived terms

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