English Words Starting With N

• nitrophenol

  nounVery Low
  /ˌnaɪ.trəʊˈfiː.nɒl/Any of three isomeric compounds derived from phenol by the substitution of a nitro group (-NO₂) for a hydrogen atom, forming colourless to yellow crystalline solids.
• nitrosamine

  nounlow
  /ˌnaɪ.trəʊ.səˈmiːn/A chemical compound, often formed in food or in the body, containing the nitroso group (-N=O) bonded to an amine. Many are potent carcinogens.
• nitroso

  adjectivenounC2
  /naɪˈtrəʊsəʊ/A chemical prefix or group indicating the presence of a nitrogen-oxygen functional group (-N=O).
• nitroso group

  nounVery Low
  /naɪˌtrəʊ.səʊ ˈɡruːp/A univalent functional group consisting of nitrogen and oxygen bonded to a carbon atom with the formula -N=O, often attached to an organic compound.
• nitrosobenzene

  nounTechnical
  /nʌɪˌtrəʊsəʊˈbɛnziːn/A chemical compound with the formula C₆H₅NO, consisting of a benzene ring linked to a nitroso group (–N=O).
• nitrosourea

  nounC2
  /ˌnaɪ.trəʊ.səʊ.jʊˈriː.ə/A potent class of chemical compounds used as anti-cancer drugs and alkylating agents.
• nitrostarch

  nounVery Rare / Technical
  /ˈnaɪ.trəʊ.stɑːtʃ/A highly explosive substance made by nitrating starch, typically corn starch, with nitric acid.
• nitrosyl

  adjectivenounVery Low
  /ˈnaɪ.trə(ʊ).sɪl/The univalent radical –NO, containing nitrogen and oxygen.
• nitrosylsulfuric acid

  nounVery Low
  /ˌnaɪ.trəʊ.sɪl.sʌlˌfjʊə.rɪk ˈæ.sɪd/A chemical compound with the formula NOHSO4, also known as nitrosylsulfonic acid, used as a reagent in organic synthesis, notably in the nitrosation of aromatic compounds.
• nitrous acid

  nounLow
  /ˌnaɪ.trəs ˈæs.ɪd/A weak, unstable acid containing nitrogen, with the formula HNO₂.
• nitrous bacteria

  plural-nounVery Low
  /ˌnaɪ.trəs bækˈtɪə.ri.ə/Microorganisms that oxidize ammonium to nitrite as part of the nitrogen cycle.
• nitrous ether

  nounC1/C2 (Very low frequency; highly technical/specialist)
  /ˌnaɪ.trəs ˈiː.θə/A volatile liquid chemical compound, specifically ethyl nitrite, formerly used as an antispasmodic and diaphoretic.
• nitrous oxide

  nounC1
  /ˌnaɪ.trəs ˈɒk.saɪd/A colourless gas with a sweet odour, used as a mild anaesthetic (laughing gas) and as a propellant in aerosol cans.
• nitroxanthic acid

  nounVery Low
  /ˌnaɪtrəʊˈzænθɪk ˈæsɪd/A chemical name for the compound picric acid, specifically referring to its identity as 2,4,6-trinitrophenol.
• nits-and-lice

  nounLow to Medium (in specific contexts like criticism, editing, quality control)
  /ˌnɪts ən(d) ˈlaɪs/A phrase used to describe meticulous, excessive, and often pedantic attention to minor details, especially in a negative or critical way.
• nitti

  nounRare
  /ˈnɪti/A minor historical figure or an obscure term.
• nitty-gritty

  adjectivenounB2
  /ˌnɪti ˈɡrɪti/The most important aspects or practical details of something.
• nitwit

  nounC1
  /ˈnɪt.wɪt/A foolish or silly person.
• niu tireni

  nounB1
  /ˌnjuː ˈziːlənd/A country in the South Pacific Ocean, comprising two main islands and numerous smaller ones.
• niue

  nounLow
  /ˈnjuːeɪ/An island country in the South Pacific Ocean, in free association with New Zealand.

Showing 2161–2180 of 3475 words.