Meaning & Definition of word "Serum"

noun:

• 1. The clear, yellowish fluid that separates from blood when it clots, containing antibodies and other proteins.
  • Example: After the blood sample was centrifuged, the serum was collected for testing.
• 2. A preparation of serum, typically used for medical treatments, such as antivenom or immunization.
  • Example: The researchers developed a new serum that could boost the immune response against the virus.
• 3. A liquid that contains the essential nutrients required for cell or tissue culture.
  • Example: Fetal bovine serum is commonly used in cell culture experiments.
• 4. A skincare product designed to deliver concentrated ingredients deep into the skin.
  • Example: She applied a vitamin C serum to her face every morning for brighter skin.