spirilla

/S P IH0 R IH1 L AH0/
noun
  1. 1

    Any of various aerobic bacteria of the genus Spirillum, having an elongated spiral form and bearing a tuft of flagella.

  2. 2

    Any of various other spiral-shaped microorganisms.

Source: https://en.wiktionary.org/wiki/spirilla, https://en.wiktionary.org/wiki/spirillum