diphtheroid

/D IH0 F TH IH1 R OY0 D/
noun
  1. 1

    Any bacterium that can cause diphtheria

adjective
  1. 1

    Of, pertaining to or resembling diphtheria.

  2. 2

    Of, pertaining to or resembling the diphtheria bacillus Corynebacterium diphtheriae.

Source: https://en.wiktionary.org/wiki/diphtheroid