Definition of cyanamide in English:



mass nounChemistry
  • 1A weakly acidic crystalline compound made as an intermediate in the production of ammonia.

    Alternative name: cyanogen amide; chemical formula: CH₂N₂

    • ‘Under this scenario, dormancy-breaking chemicals (such as hydrogen cyanamide, HC) enhance budbreak by diminishing the duration of suppression.’
    • ‘It re-examined the approval to import and manufacture soluble concentrates containing hydrogen cyanamide to ensure existing controls were adequate to address potential risks.’
    • ‘Enzymatic activity in extracts of a soil fungus, Myrothecium verrucaria, hydrates the nitrile group of cyanamide with formation of urea.’
    • ‘Hydrogen cyanamide reduced fruit set in the first year but not the second.’
    • ‘Yabuki et al. described a novel metabolite with a different ring-opening pattern leading to a cyanamide.’
    1. 1.1 A salt of cyanamide containing the anion CN₂²⁻, especially the calcium salt used as a fertilizer.
      • ‘No information is available on the reproductive or developmental effects of calcium cyanamide in humans or animals.’
      • ‘The reactivity of the nitrile functional group in calcium cyanamide makes it as a chief industrial raw material.’


Mid 19th century: blend of cyanogen and amide.