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urea

urea

3 5.4
A chemical the body makes that appears in urine and is often used as a fertilizer
  • noun
  • /juˈrɪə/
  • Specialized
: urea
  • The trends in lactate and urea levels exhibited during the three phases were similar.
  • urea concentration
  • urea fertilizer
  • blood urea

And he also knew that there are two toxic substances in urine, urea and uric acid.

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Examples

  • For example, patients with heart failure and altered renal function frequently have altered creatinine and urea levels.

    Academic text (2012)
  • And he also knew that there are two toxic substances in urine, urea and uric acid.

  • Part of the the long term cycle of that is you have an increased level of urea in your bloodstream.

  • If concentrations of urea get too high in your in your plasma, it becomes toxic.

  • Such data show that urea can have important toxic effects in uraemia.

    Academic text (1991)
  • The mechanisms underlying the changes in urea concentrations are unclear.

    Academic text (1993)
  • Lab values continue to show progressive, severe renal failure, with rising blood urea nitrogen and rising creatinine.

  • The chemical fertilizer N was applied as urea and di-ammonium phosphate, P as di-ammonium phosphate, and K as potassium sulfate.

    Academic text (2015)
  • In cartilaginous fishes (e.g., sharks, rays), the principal low-molecular-weight osmolyte is urea (up to several hundred mmol/l).

    Academic text (1991)
  • The nitrogen in urea helps plants grow by providing them with essential nutrients.

Synonyms

carbamide
vsurea
  • Specialized
1 8.1

A solid chemical made from ammonia and carbon dioxide found as the main solid in urine and used in fertiliser

is the same compound but uses a different scientific or alternative name

Compounds

1 9.0

A hard clear plastic made from chemicals that people use to make finishes, glues, and covers

phenolic urea
  • Specialized
9.5

A strong, heat-resistant plastic made from special resins and urea

Surface Forms

urea singular
ureas plural

Etymology

Urea comes from the old Greek word ouron, which means 'urine', so the name gives a clear image of the chemical first found in urine. That's why urea is the main nitrogen waste in the body and why farmers also use it as a nitrogen-rich fertilizer.