bacilli

/B AH0 S IH1 L IY0/
noun
  1. 1

    Any of various rod-shaped, spore-forming aerobic bacteria in the genus Bacillus, some of which cause disease.

  2. 2

    Any bacilliform (rod-shaped) bacterium.

  3. 3

    (by extension) Something which spreads like bacterial infection.

Source: https://en.wiktionary.org/wiki/bacilli, https://en.wiktionary.org/wiki/bacillus