Definition of avidity in English:



mass noun
  • 1Keen interest or enthusiasm.

    ‘he read detective stories with avidity’
    • ‘It represents an avidity to produce a grand modern opera rather than an actual vision of one.’
    • ‘In such an exhibition, one can see how traditional art teaching methods have become fairly redundant, and the avidity with which the tools of new media are used to communicate.’
    • ‘This is the story: there is an avidity of sympathy and suffering around at the moment, and remembering the Holocaust is an attempt to lock on to that.’
    • ‘A spirit of enquiry is abroad among the Chinese, and there is a class of students, by no means small in number, who receive with avidity instruction on scientific matters from the West.’
    • ‘But Griett is sent to clean the artist's studio, and he notices her curiosity and the avidity with which she studies his work.’
    • ‘He plunges with avidity into the delights of inner-city Glebe and the University of Sydney in its heyday.’
    • ‘With a tractable reading list in front of me my impatience with reading turned quickly into avidity.’
    • ‘Marxists say it's not possible to change the rules, that capitalism will always engender its own crises, that its own avidity, greed, and iron laws will be its undoing.’
    • ‘Right now I don't know whose appetite I monitor with more avidity, hers or Riff's.’
    • ‘The euro seems to be reviled with avidity and fervour wherever one goes, from Holland to the Med.’
    • ‘It is certainly true that there is not the enthusiasm, the appetite, the avidity for film that there was when I first began writing about it.’
    • ‘Molecular biologists enter the story, but mainly those with an avidity for technology and an appetite for large scale.’
    • ‘It appears to be inevitable that abuses will have occurred, given the avidity with which behavior modification has been sought after.’
    • ‘Partisans on both sides study the fluctuating daily polls with the avidity of baseball fans following the electrifying playoffs.’
    • ‘Over the years I have read with avidity various intellectual disputes in The New York Review of Books and other literary journals.’
    • ‘She's been empty inside, with nothing but a heart burning with anger and avidity.’
    • ‘Women may write books of poetry, travels, &c. and they will be read with avidity.’
    • ‘Since this is not a project I've followed with any avidity I was not aware that the fertilizing occurred yesterday.’
    • ‘A fox's head on an old lady's boa had also been seized with avidity by a foxhound, under the impression that he had at last found his hereditary enemy.’
    • ‘Here an avidity for new and different species of flora embraces interesting species of fauna as well, both of the four-footed and two-footed kind.’
    enthusiasm, keenness, eagerness, avidness, ardour, fervour, passion, zeal, zealousness, fanaticism, voracity, voraciousness
    View synonyms
  • 2Biochemistry
    The overall strength of binding between an antibody and an antigen.

    • ‘This patient was therefore reassured that she had not had primary rubella, as she had a history of rubella vaccination and high avidity rubella specific IgG was detected.’
    • ‘When they are available and a single component is of interest, two monoclonal antibodies of high avidity directed to different epitopes on an allergenic molecule are the most suitable.’
    • ‘Because of the low avidity of the antibody, HSF1 needed to be enriched prior to western blot.’
    • ‘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.’


Late Middle English: from French avidité or Latin aviditas, from avidus ‘eager, greedy’.