Complement is a normal thermolabile protein constituent of blood serum that participates in antigen-antibody reactions.

Webster Dictionary Meaning

1. Complement
- That which fills up or completes; the quantity or number required to fill a thing or make it complete.
- That which is required to supply a deficiency, or to complete a symmetrical whole.
- Full quantity, number, or amount; a complete set; completeness.
- A second quantity added to a given quantity to make it equal to a third given quantity.
- Something added for ornamentation; an accessory.
- The whole working force of a vessel.
- The interval wanting to complete the octave; -- the fourth is the complement of the fifth, the sixth of the third.
- A compliment.
- To supply a lack; to supplement.
- To compliment.
Category: Microbiology
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