Definition of avidity in English:


Line breaks: avid|ity
Pronunciation: /əˈvɪdɪti


[mass noun]
  • 2 Biochemistry The overall strength of binding between an antibody and an antigen.
    More example sentences
    • If infection is established (infection greater than about 4 months), this agent will have a lesser ability to disrupt the complexes because of high antibody avidity (binding strength).
    • To improve the diagnosis of illness caused by B 19 and to discriminate primary from secondary infection, a protein denaturing assay for avidity of erythrovirus-specific IgG antibodies or measurement of IgG subclass, can be used.
    • Because of the low avidity of the antibody, HSF1 needed to be enriched prior to western blot.


late Middle English: from French avidité or Latin aviditas, from avidus 'eager, greedy'.

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