Calcium: meaning, definitions and examples

Use this term in everyday conversation or general contexts when talking about the mineral found in foods, supplements, or human and animal bones.

• Milk is a good source of calcium.
• Doctors recommend calcium supplements for older adults.

This abbreviation is mainly used in scientific, medical, or educational contexts, especially in chemical formulas or discussions.

• The chemical symbol for calcium is Ca.
• In chemistry class, we learned that Ca has an atomic number of 20.

Used primarily in biological and health-related contexts to refer to the essential mineral needed for bone health and other bodily functions.

• Calcium is vital for maintaining strong bones and teeth.
• A calcium supplement can help those who don't get enough from their diet.

Used to describe the physical and chemical properties of calcium among other metals, especially in chemistry and materials science.

• Calcium is a soft, gray metal that is often used in alloys.
• Unlike some metals, calcium reacts quickly with water.

Used in scientific contexts to refer to a basic substance that consists of only one type of atom, of which calcium is an example.

• Calcium is an element with atomic number 20 on the periodic table.
• Oxygen is another essential element for life.