• noun
• synonym
• antonym

• complement fixation (noun)
  1. so it is unavailable to participate in a second antigen-antibody combination an immune response in which an antigen-antibody combination inactivates a complement
• complement fixation test (noun)
  1. a blood test in which a sample of serum is exposed to a particular antigen and complement in order to determine whether or not antibodies to that particular antigen are present; used as a diagnostic test
• infantile fixation (noun)
  1. an abnormal state in which development has stopped prematurely
• nitrogen fixation (noun)
  1. the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria
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