spirillum Hear it!

spirillum definition

spi·ril·lum (spī ril′əm)

noun pl. spirilla -·la (-ə)

  1. any of a genus (Spirillum) of bacteria having the form of a spiral thread and characterized by flagella
  2. any of various similar microorganisms

Etymology: ModL, dim. of L spira: see spire

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