phosphorus
Meaning of phosphorus: Phosphorus is an essential mineral present in bones, teeth, and cell energy molecules, with blood levels regulated closely alongside calcium.
Definition of phosphorus
Phosphorus is a nonmetallic chemical element that is essential to many body functions and is found throughout the body, particularly in bones and teeth, where it combines with calcium to provide structural strength. Phosphorus is also a key component of adenosine triphosphate, commonly abbreviated ATP, the molecule cells rely on as their primary source of usable energy.
Beyond its structural and energy related roles, phosphorus is a component of cell membranes and genetic material, and it participates in numerous chemical reactions throughout the body. Phosphorus is obtained through the diet, present in many common foods, and its levels in the blood are regulated by hormones that also help control calcium levels, reflecting the close relationship between these two minerals.
Blood phosphorus levels can be affected by kidney function, since the kidneys play a central role in regulating how much phosphorus is retained or excreted, and abnormal phosphorus levels are commonly evaluated alongside calcium and kidney function as part of a broader metabolic assessment.
Used in a sentence
A blood test showed a low phosphorus level in the patient with poorly controlled kidney disease.
Good to know
Blood phosphorus and calcium levels are regulated together by shared hormonal pathways, so an abnormality in one is often evaluated alongside the other rather than in isolation.
Word origin
Where “phosphorus” comes from
Formed from Greek phos, meaning light, and phoros, meaning bearing, describing the faint glow given off by elemental phosphorus.