Definition of avidity in English:



mass noun
  • 1Keen interest or enthusiasm.

    ‘he read detective stories with avidity’
    • ‘Partisans on both sides study the fluctuating daily polls with the avidity of baseball fans following the electrifying playoffs.’
    • ‘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.’
    • ‘But Griett is sent to clean the artist's studio, and he notices her curiosity and the avidity with which she studies his work.’
    • ‘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.’
    • ‘Over the years I have read with avidity various intellectual disputes in The New York Review of Books and other literary journals.’
    • ‘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.’
    • ‘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.’
    • ‘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.’
    • ‘Right now I don't know whose appetite I monitor with more avidity, hers or Riff's.’
    • ‘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.’
    • ‘It represents an avidity to produce a grand modern opera rather than an actual vision of one.’
    • ‘Women may write books of poetry, travels, &c. and they will be read with avidity.’
    • ‘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.’
    • ‘The euro seems to be reviled with avidity and fervour wherever one goes, from Holland to the Med.’
    • ‘He plunges with avidity into the delights of inner-city Glebe and the University of Sydney in its heyday.’
    • ‘Since this is not a project I've followed with any avidity I was not aware that the fertilizing occurred yesterday.’
    • ‘It appears to be inevitable that abuses will have occurred, given the avidity with which behavior modification has been sought after.’
    • ‘She's been empty inside, with nothing but a heart burning with anger and avidity.’
    • ‘Molecular biologists enter the story, but mainly those with an avidity for technology and an appetite for large scale.’
    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.

    • ‘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.’
    • ‘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.’
    • ‘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.’
    • ‘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).’
    • ‘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’.