Definition of diphtheroid in English:

diphtheroid

noun

Microbiology
  • Any bacterium of a genus that includes the diphtheria bacillus, especially one that does not cause disease.

    • ‘Of the 19 units manifesting growth, 16 yielded only diphtheroids, 1 unit grew coagulase-negative staphylococci, 1 unit grew diphtheroids and micrococci, and 1 unit grew diphtheroids and coagulase-negative staphylococci.’
    • ‘Investigators found Staphylococcus, Streptococcus viridans, diphtheroids, Escherichia coli, and candida on gym equipment and facilities.’
    • ‘The eschar swab rendered growth of coagulase-negative Staphylococcus species, light growth of diphtheroids, and rare Streptococcus viridans.’
    • ‘The trend for Corynebacterium species and diphtheroids may reflect a change from regarding these organisms as skin contaminants to being clinically significant, as occurred for coagulase negative staphylococci.’
    • ‘Other normal inhabitants of the birth canal - staph, strep, diphtheroids, anaerobes, E. coli and Listeria - are other pathogens that may cause neonatal pneumonia.’

adjective

Medicine
  • [attributive] Similar to diphtheria.

    ‘diphtheroid endocarditis’
    • ‘Diphtheroid necrotic inflammation of the larynx in calves in its advanced stage mostly requires surgical therapy.’
    • ‘Diphtheroid infection is a rare cause of endocarditis and, when present, it usually affects immunocompromised hosts or prosthetic valves.’
    • ‘There are few reports of diphtheroid endocarditis on intact valves, and, to our knowledge, this is the first case in which the offending organism was identified as C xerosis.’

Pronunciation:

diphtheroid

/ˈdɪfθərɔɪd//ˈdɪpθərɔɪd/