rh > define

noun

• A blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia.
  • synonyms: rhesus factor, Rh factor
• A white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum.
  • synonyms: rhodium, atomic number 45
• Any of several hormones produced in the hypothalamus and carried by a vein to the anterior pituitary gland where they stimulate the release of anterior pituitary hormones; each of these hormones causes the anterior pituitary to secrete a specific hormone.
  • synonyms: releasing hormone, releasing factor, hypothalamic releasing hormone, hypothalamic releasing factor