Definition of pseudodiphtheria in US English:

pseudodiphtheria

noun

Medicine
  • 1Attributive Designating the bacterium Corynebacterium pseudodiphtheriticum, which resembles the causal agent of diphtheria, C. diphtheriae, and is found in the nasopharynx of humans, but is non-pathogenic. Chiefly in "pseudodiphtheria bacillus". Compare pseudodiphtheritic. Now historical.

  • 2Any of various forms of pharyngitis or tonsillitis resembling diphtheria, especially by the presence of a pseudomembrane. Now rare.

Origin

Late 19th century; earliest use found in The Lancet. From pseudo- + diphtheria.