脲 (niào) - Urea — the chief nitrogenous waste product of & also refers to the chemical compound CO(NH₂)₂.

脲Tone 4

niào ｜ 11 strokes ｜ radical:

念柠

脲 · niào

Urea — the chief nitrogenous waste product of mammals and the main organic component of urine;

also refers to the chemical compound CO(NH₂)₂.

Urea — the chief nitrogenous waste product ofalso refers to the chemical compound CO(NH₂)₂.

Usage highlights

UreaBlood urea nitrogenUrea fertilizerUrea cycleUrea nitrogenUrea resin

Synonyms

  • 尿素— urea (chemical compound)

Usage & contexts

Examples

  • Urea is a nitrogenous waste product (脲).
  • Blood urea nitrogen test (血尿素氮检查).
  • Urea fertilizer is commonly used in agriculture (尿素肥料).
  • The chemical formula of urea is CO(NH₂)₂ (尿素).

Collocations

  • Urea(尿素)
  • Blood urea nitrogen(血尿素氮)
  • Urea fertilizer(尿素肥料)
  • Urea cycle(尿素循环)
  • Urea nitrogen(尿素氮)
  • Urea resin(尿素树脂)

Idioms

  • Urea cycle disorder(尿素循环障碍)
  • Urea nitrogen test(尿素氮检测)
  • Urea formaldehyde resin(脲醛树脂)

Cultural background

FAQ
  • The character 脲 is a modern scientific character created specifically for chemical terminology.
  • It combines the radical 月 (肉, meaning flesh/body) with 尿 (urine), indicating its biological origin.
  • Primarily used in medical, chemical, and agricultural contexts rather than everyday language.

FAQ