Bacillus and Bacilli

Bacillus noun - Aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil.

Bacilli and bacillus are semantically related In some cases you can replace term "Bacilli" with "Bacillus", this nouns are similar.

Bacillus and bacilli are semantically related in bacteria topic. You can use "Bacillus" instead a noun "Bacilli", if it concerns topics such as bacterium.