Antibody meaning

ăn'tĭ-bŏd'ē
The definition of an antibody is a protein molecule that can be found in the blood and is intended to attack bacteria, viruses and transplanted organs.

An example of an antibody is rituximab.

noun
6
0
A specialized protein produced by certain lymphocytes, esp. in response to the presence of an antigen, to neutralize, thus creating immunity to, specific antigens; immunoglobulin.
noun
1
0
(immunology) A protein produced by B-lymphocytes that binds to a specific antigen.
noun
1
1
Any of numerous Y-shaped glycoproteins that bind to specific antigens and either neutralize them or cause them to be destroyed by other elements of the immune system, such as phagocytes, cytotoxic cells, or complement proteins. Antibodies occur as antigen receptors on the surface of B cells and are secreted as soluble proteins when the B cells mature into plasma cells. Antibodies are also called “immunoglobulins.”
noun
0
1
Any of numerous proteins produced by B lymphocytes in response to the presence of specific foreign antigens, including microorganisms and toxins. Antibodies consist of two pairs of polypeptide chains, called heavy chains and light chains , that are arranged in a Y-shape. The two tips of the Y are the regions that bind to antigens and deactivate them.
0
1
Advertisement
A Y-shaped protein on the surface of B cells that is secreted into the blood or lymph in response to an antigenic stimulus, such as a bacterium, virus, parasite, or transplanted organ, and that neutralizes the antigen by binding specifically to it; an immunoglobulin.
noun
0
2

Origin of antibody

  • Translation of German Antikörper anti- antagonistic (from Latin anti- anti-) Körper body
    From American Heritage Dictionary of the English Language, 5th Edition
  • anti- +‎ body, a calque of German Antikörper.
    From Wiktionary