Meaning & Definition of word "Hemoglobin"

noun:

• 1. A red protein responsible for transporting oxygen in the blood of vertebrates, consisting of four subunits, each containing an iron atom that can bind to oxygen.
  • Example: The doctor explained that low hemoglobin levels could indicate anemia.
• 2. A protein in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.
  • Example: The hemoglobin in her blood was measured during the routine checkup.
• 3. The amount of hemoglobin in the blood, often measured to assess health.
  • Example: A hemoglobin test is commonly performed to monitor a patient's overall health.
• 4. A variant of hemoglobin, such as fetal hemoglobin or sickle cell hemoglobin, which may differ in structure and function.
  • Example: Sickle cell hemoglobin can cause the red blood cells to assume a sickled shape, leading to various complications.
• 5. The oxygen-carrying capacity of hemoglobin, often expressed as a percentage or as part of a blood test.
  • Example: His hemoglobin saturation was measured at 95%, indicating good oxygen levels.