English pronunciation · Words Starting with B

Bacillus Pronunciation

Bacillus is pronounced buh-SI-luhs, IPA /bəˈsɪləs/.

buh-SI-luhs

US /bəˈsɪləs/  ·  UK /ˈbæsɪləs/

Syllables: buh · SI · luhs (3 syllables, stress on syllable 2)

noun: A rod-shaped bacterium, and the genus name for a large group of them.

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Bacillus in a Sentence

  • The lab identified a bacillus in the water sample.
  • Bacillus subtilis lives harmlessly in soil.
  • Anthrax is caused by a bacillus, not a virus.

Common Mispronunciations of Bacillus

Not ba-SIL-oos

The ending is a dull luhs, not a Latin oos, since English reshapes borrowed endings to its own pattern. The plural bacilli does keep a long ee.

Not BA-ki-luhs

A c standing in front of an i softens to a plain s. Only before a, o or u does it hold the hard k of cat.

Tip: The two accents disagree about the beat. American dictionaries give buh-SI-luhs and British ones put the weight at the front, BA-si-luhs.

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