English Words Starting With B

• barium

  nounC1
  /ˈbɛːrɪəm/A soft, silvery-white metallic chemical element (symbol Ba, atomic number 56) that is highly reactive and never found in nature in its pure form.
• barium 140

  nounVery Low (Scientific/Technical)
  /ˈbɛːrɪəm wʌnˌfɔːti/An unstable, radioactive isotope of the chemical element barium, with a half-life of about 12.8 days.
• barium bromate

  nounVery Rare
  /ˈbɛərɪəm ˈbrəʊmeɪt/An inorganic chemical compound with the formula Ba(BrO3)2, primarily used in analytical chemistry and pyrotechnics.
• barium carbonate

  nounC1/C2
  /ˈbɛːrɪəm ˈkɑːb(ə)nət/A white, insoluble powder with the chemical formula BaCO₃.
• barium chloride

  nounC1
  /ˈbɛːrɪəm ˈklɔːrʌɪd/A chemical compound with the formula BaCl₂, a white crystalline salt.
• barium chromate

  nounVery Low / Specialized
  /ˈbeə.ri.əm ˈkrəʊ.meɪt/An inorganic chemical compound with the formula BaCrO4, appearing as a yellow crystalline powder, insoluble in water.
• barium enema

  nounC2
  /ˌbeə.ri.əm ˈen.ɪ.mə/A medical diagnostic procedure used to examine the colon and rectum, involving the administration of barium sulphate contrast liquid via the anus and taking X-ray images.
• barium hydroxide

  nounC1/C2 (Technical/Scientific)
  /ˌbɛːrɪəm haɪˈdrɒksaɪd/A chemical compound with the formula Ba(OH)₂, used as a strong base in laboratories and industry.
• barium meal

  nounC1
  /ˈbɛːrɪəm miːl/A preparation of barium sulfate given to a patient to swallow so that parts of their digestive system (especially the stomach and intestines) can be made visible on an X-ray image.
• barium oxide

  nounC2
  /ˌbeə.ri.əm ˈɒk.saɪd/A white, solid, inorganic chemical compound with the formula BaO, formed from barium and oxygen.
• barium peroxide

  nounC2
  /ˌbeə.ri.əm pəˈrɒk.saɪd/A chemical compound with the formula BaO₂, a grayish-white powder used as an oxidizing agent and in pyrotechnics.
• barium stearate

  nounC2/Technical
  /ˈbɛːrɪəm ˈstɪəreɪt/A chemical compound consisting of the metal barium combined with stearic acid, used primarily as a lubricant and stabilizer in plastics, rubber, and waxes.
• barium sulfate

  nounC2 (Technical/Specialist)
  /ˌbeə.ri.əm ˈsʌl.feɪt/A white crystalline compound, BaSO₄, insoluble in water, used as a radiocontrast agent in medical imaging and as a white pigment.
• barium sulfide

  nounVery Low
  /ˈbɛːrɪəm ˈsʌlfaɪd/A chemical compound with the formula BaS, consisting of barium and sulfur.
• barium sulphate

  nounC2
  /ˈbeə.ri.əm ˈsʌl.feɪt/An insoluble white compound (BaSO₄) used as a white pigment and in X-ray diagnostics.
• barium thiosulfate

  nounC2
  /ˈbeə.ri.əm ˌθaɪ.əʊˈsʌl.feɪt/A chemical compound with the formula BaS₂O₃, consisting of barium cations and thiosulfate anions. It is a white, crystalline, water-insoluble salt.
• barium titanate

  nounC2 (Specialist)
  /ˌbeə.ri.əm ˈtaɪ.tə.neɪt/An inorganic chemical compound (BaTiO₃) with ferroelectric properties.
• bark

  nounverbverb-intransitiveverb-transitiveA2
  /bɑːk/The short, loud sound made by a dog or similar animal.
• bark beetle

  nounLow
  /ˈbɑːk ˌbiːtl̩/A small beetle that burrows into the bark and wood of trees, often causing significant damage or death to the tree.
• bark cloth

  nounC1-C2
  /ˈbɑːk ˌklɒθ/A soft, thick, slightly textured fabric or non-woven material, historically made by beating and processing the inner bark of certain trees (e.g., paper mulberry, breadfruit).

Showing 1481–1500 of 10030 words.