Calcium

Part of speech: noun

Pronunciation: /ˈkælsi.əm/

Definitions

1. A soft, silvery-white metallic element with the symbol Ca and atomic number 20, first isolated by Humphry Davy in 1808 ; a critical nutrient for plants and animals, supporting bone development and cell signaling
2. A silvery-white metal (symbol Ca, atomic number 20) identified by Sir Humphry Davy in 1808; commonly found in dairy products as a nutrient; also used to describe a mineral supplement providing this essential element
3. An important chemical element with symbol Ca and atomic number 20, notable for its role in forming limestone and chalk; frequently referenced in nutrition; can also mean a tablet or powder containing this mineral
4. A metallic element with symbol Ca and atomic number 20, first isolated by Humphry Davy; also denotes compounds or ions containing this element ; commonly used to refer to dietary sources important for bone health
5. A soft, silvery earth metal with symbol Ca and atomic number 20, discovered in 1808 by Davy; can signify substances or supplements containing this mineral ; often refers to a vital nutrient derived from food

Etymology: The name for this essential chemical element originates from the Latin word "calx," meaning "lime" or "limestone." This connection highlights the mineral's natural occurrence in limestone and chalk, both rich in calcium compounds. The suffix "-ium," commonly used in the names of metallic elements, was added during the 18th century when chemists began systematically naming newly isolated substances. The journey to isolate and name this element began in the late 18th century. English chemist Sir Humphry Davy played a pivotal role by using electrolysis to isolate calcium metal in 1808. Before this discovery, calcium was known only through its compounds, such as lime, which had been used since antiquity in construction and agriculture. The choice of "calcium" reflects the element's significance as a building block, both literally and figuratively. Its compounds form the basis of bones and shells, as well as the mortar that binds stones together. The Latin root "calx" thus passed from describing a simple mineral substance to naming a fundamental building element of the natural world. Over time, the term became firmly established in scientific vocabulary, appearing in chemistry texts and expanding into biology and medicine as knowledge of calcium's role in living organisms grew. Its name carries the legacy of early mineralogy and chemistry, linking a common material of everyday life to the elemental forces that shape both earth and body.

Synonyms: Ca, calciferol source, alkaline earth metal