barium
- Noun:
- A chemical element: Barium is a soft, silvery-white metallic element belonging to the alkaline earth metal group in the periodic table. It is chemically reactive and is never found in nature as a free element due to its high reactivity.
- A substance with specific properties: In its pure form, barium is a heavy metal. Its compounds are notable for their high density and are used in various industrial and medical applications.
- Noun:
- Barium has the atomic number 56 and the symbol Ba.
- The doctor ordered a barium swallow test to examine the patient's digestive tract.
- Barium sulfate is a common compound used as a radiocontrast agent.
"Barium meal" or "Barium enema": Refers to medical procedures where a patient ingests or is administered a suspension of barium sulfate. This compound is opaque to X-rays, allowing doctors to visualize the gastrointestinal tract.
- Before the X-ray, the patient drank a barium meal.
In chemistry and industry: Barium compounds are used in fireworks (to create green colors), in glassmaking, and as a getter in vacuum tubes to remove trace gases.
- Barium nitrate is a key component in some green pyrotechnic formulas.
Barite (or Barytes) (n): A mineral consisting of barium sulfate (BaSO₄), which is the primary commercial source of barium.
- The mine produces barite for industrial use.
Barium sulfate (n): An insoluble, white compound (BaSO₄) used in medical imaging and as a filler in products like paints and plastics.
- Barium carbonate (n): A toxic white powder (BaCO₃) used in the manufacture of ceramics and rat poison.
- Element 56: Referring to its atomic number.
- Alkaline earth metal: Referring to its group in the periodic table (though this is a category, not a direct synonym for the element itself).
(Note: As 'barium' is primarily a noun for a chemical element, it does not form phrasal verbs. Common usage involves compound terms for its applications.) - Barium test: A general term for diagnostic procedures using barium sulfate. - Barium titanate: A compound used in electronics for its piezoelectric properties.
(Note: There are no common idioms specifically featuring the word 'barium'. Its usage is almost exclusively scientific, medical, or industrial.)
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a soft silvery metallic element of the alkali earth group; found in barite
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