Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

spirillum

play
noun spi·ril·lum \spī-ˈri-ləm\

Definition of spirillum

plural spi·ril·laplay \-ˈri-lə\

  1. :  any of a genus (Spirillum) of curved elongated motile bacteria having tufts of flagella at both poles; broadly :  a spiral filamentous bacterium (as a spirochete)



Origin of spirillum

New Latin, from diminutive of Latin spira coil


First Known Use: circa 1875

Rhymes with spirillum


Medical Dictionary

spirillum

play
noun spi·ril·lum \spī-ˈril-əm\

Medical Definition of spirillum

  1. 1 capitalized :  a genus of gram-negative bacteria comprising elongated forms having tufts of flagella at both poles and usually living in stagnant water rich in organic matter—see rat-bite fever b

  2. 2plural spi·ril·la \-ˈril-ə\play :  any bacterium of the genus Spirillum




Learn More about spirillum


Seen and Heard

What made you want to look up spirillum? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 12, 2016

of, relating to, or suggestive of marble

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

100 pounds 2.2 pounds 196.5 pounds 16.96 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ