CALCIUM Meaning and
Definition
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Calcium is a chemical element represented by the symbol Ca and the atomic number 20. It is a soft, silvery-white alkaline earth metal that is essential for the functioning of various biological processes in organisms.
In terms of its physical properties, calcium is relatively reactive, forming a protective oxide layer when exposed to air and reacting vigorously with water to produce hydrogen gas. It is a fairly abundant element in the Earth's crust, representing about 3.6% by mass.
In the realm of biology, calcium plays a crucial role in many physiological processes. It is a vital component of bones and teeth, imparting strength and structure to these skeletal elements. Additionally, calcium ions are significant in cell signaling, acting as intracellular messengers and controlling numerous cellular processes such as muscle contraction, nerve transmission, and hormone secretion. It is also involved in blood clotting, regulating enzyme activity, and maintaining the proper functioning of the cardiovascular system.
Dietary sources rich in calcium include dairy products like milk, cheese, and yogurt, as well as leafy greens, such as spinach and kale. Calcium supplements are sometimes recommended to individuals with calcium deficiencies or specific medical conditions that require additional calcium intake.
Overall, calcium is an indispensable mineral necessary for the normal functioning and growth of living organisms, supporting a wide array of biological processes and maintaining overall health and vitality.
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A metallic dyad element, of a lustrous yellow color, symbol Ca, atomic weight 40.09. The oxide of calcium is an alkaline earth, CaO, quick lime, which on the addition of water becomes calcium hydrate, Ca(OH)2, slaked lime. Several of the salts of calcium are employed in medicine.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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The metallic base of calx or lime.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of CALCIUM
The word "calcium" has its roots in the Latin term "calx", which means "lime". Lime is a white, powdery substance obtained from limestone. The element calcium was named after lime due to its abundance in limestone rock. The modern term "calcium" was first coined by the Swedish chemist and mineralogist Jöns Jacob Berzelius in the early 19th century.
Similar spelling words for CALCIUM
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