calcium

/'kælsiəm/

Thân thiện

A glass of milk is a good source of calcium.

Definition

1. Noun:
   • A chemical element: Calcium is a soft, silver-white metallic element that is essential for living organisms. It is the fifth most abundant element in the Earth's crust.
   • A vital mineral: In biological contexts, calcium is a crucial mineral for the formation of bones, teeth, and shells, and it plays a key role in cellular processes.

Usage Examples

• Noun:
  • Milk is a good source of calcium for strong bones.
  • The compound contained calcium and oxygen.
  • A deficiency in calcium can lead to health problems.

Advanced Usage

• "Calcium carbonate": A common compound of calcium, carbon, and oxygen (CaCO₃), found in limestone, chalk, and shells.
  • The white cliffs are composed primarily of calcium carbonate.
• "Calcium channel blocker": A type of medication that affects the movement of calcium into cells.
  • The doctor prescribed a calcium channel blocker for her hypertension.

Variants and Related Words

• Calcify (verb): To harden or become hard by depositing calcium salts.
  • Over time, the tissue may calcify.
• Calcareous (adjective): Containing calcium carbonate; chalky.
  • The soil in the region is very calcareous.

Synonyms

• Element Ca: Referring to calcium by its chemical symbol.
• Alkaline earth metal: The group of metallic elements to which calcium belongs.

Related Phrases

• "Calcium deposit": A buildup of calcium salts in body tissue.
  • The X-ray showed a small calcium deposit in the tendon.
• "Calcium supplement": A pill or powder taken to increase dietary calcium intake.
  • She takes a calcium supplement daily.

Related Idioms

Học thuật

Noun

1. a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals

Từ đồng nghĩa

• Ca
• atomic number 20