Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: hay bacillus  hey bu'si-lus
  1. A species of bacillus found in soil and decomposing organic matter; some strains produce antibiotics
    - Bacillus subtilis, Bacillus globigii, grass bacillus

Derived forms: hay bacilli

Type of: B, bacillus