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noun

urea

the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics

In a sentence

Six example sentences with urea, each labelled with its topic.

  • Farmers spread urea before rain, and the runoff turns the creek cloudy for a week downstream of the field.

    Environment

  • A blood test measuring urea tells the physician quickly whether the kidneys are clearing waste at a normal rate.

    Medicine

  • Plants beside the gas fields ship urea by the trainload, and their margins track natural gas prices closely.

    Economics

  • In 1828 Wohler made urea from ammonium cyanate, the first time a product of living bodies was built from lifeless chemicals.

    History

  • Fish release ammonia straight into the water, while mammals convert it to urea, which is far less toxic to carry.

    Science

  • Modern diesel trucks inject a urea solution into the exhaust, where it breaks nitrogen oxides into harmless nitrogen and water.

    Technology

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Found in these word lists

Found in 2 published word listsAuthoritative

Each source is a published word list that contains urea. No exam board publishes an official GRE, GMAT or SAT list; GMAT words come from GRE lists and the Academic Word List.