Definition of opsonize in English:


transitive verb

(also British opsonise)
[with object]Medicine
  • Make (a foreign cell) more susceptible to phagocytosis.

    ‘CRP opsonizes the capsules of virulent pneumococci’
    • ‘The role of B-cells in the immune response is to release antibodies that may opsonize a particular cell and assist T-cells in destruction of that cell.’
    • ‘It opsonised GAS with an average percentage opsonisation of 46 and 50 per cent, respectively.’
    • ‘Three-micrometer latex beads were opsonized with human immunoglobulin G.’
    • ‘In humans and animals only M protein typespecific antibodies have the capacity to opsonize streptococci and to override the anti-phagocytic property of M protein.’
    • ‘The percentage of GAS opsonized was determined by counting the number of colonies growing after incubation with test immune sera and comparing this with the number of colonies growing after incubation with control sera.’



/ˈäpsōˌnīz/ /ˈɑpsoʊˌnaɪz/