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.
The AVID elective is a class that meets five hours per week within the regular school day. The class is composed of several different elements, making students more successful in all their classes. The week is divided into curriculum days, tutorial days, and motivational activity days.