Marked by imprecision and vacillation; inconstant; uncertain: The wishy-washy player keeps putting off the evil day/ It's not overpowering like Opium and not wishy-washy [1873+; fr a rhythmic reduplication of washy, ''weak, diluted, watered-down,'' probably influenced by wishy as suggesting vacillating desires; the original sense was ''weak, insubstantial, trashy,'' found by 1703]
Medical Definition of avidity. : a characteristic of antibodies (such as antitoxins) that tends to enhance their rate or stability in binding with an antigen Antibody avidity is an average measure of the affinity of the antibodies for a particular antigen in a serum sample.âDominic F. Kelly, The New England Journal of Medicine, 21 Dec. 2005.
Avidin is a glycoprotein consisting of four identical subunits. It is a minor constituent of the egg white of reptiles, amphibians, and birds. In the chicken, it is synthesized in the oviduct in response to progesterone and in several tissues in connection with inflammation and tissue damage (Elo et al.ecent work with avidin has found its use in a variety of cancer treatments (Lesch et al. 2010). Both avidin and its derivatives continue to be used in the isolation of biotinylated proteins (Bolivar et al. 2008), and it has been incorporated into assays to detect levels of biotin in urine and serum (Zarogiannis et al.