VocabauraVOCABAURA

bacillus

noun

Simple meaning

Aerobic rod-shaped spore-producing bacterium.

Pronunciation

Say it like this:

buhsiluhs

Say the bold part a little louder.

US device voice
IPA pronunciation (US)

bəˈsɪləs

This word is pronounced essentially the same in American and British English, so one transcription covers both.

IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.

Word Review

Definition

Everyday modern meanings first, grouped by part of speech.

noun

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

  2. Any bacilliform (rod-shaped) bacterium.

  3. figurativeby extension

    Something which spreads like bacterial infection.

Word at a Glance

Frequency
Uncommon
Formality
Technical

Share your sentence

Write your own example sentence using “bacillus”. We review each one before it appears.

Common Patterns and Combinations

How this word naturally appears with others.

Aerobic / bacilliform

diphtheria bacillusanthrax bacillusinfluenza bacillusplague bacillus

Spreads

typhoid bacillus

Other combinations

tubercle bacilluscomma bacilluscolon bacillus

Tap the highlighted word to open its own entry.

Word Family

Related forms, grouped by how they connect.

Compound terms

Established multiword terms.

  • bacillus anthracisnounCompound term

    A species of bacillus that causes anthrax in humans and in animals (cattle and swine and sheep and rabbits and mice and guinea pigs).

  • bacillus globigiinounCompound term

    A species of bacillus found in soil and decomposing organic matter.

  • bacillus subtilisnounCompound term

    A species of bacillus found in soil and decomposing organic matter.

  • comma bacillusnounCompound term

    Comma-shaped bacteria that cause Asiatic cholera.

  • gartner's bacillusnounCompound term

    A form of salmonella that causes gastroenteritis in humans.

  • genus bacillusnounCompound term

    Type genus of the Bacillaceae.

Ask Vocabaura

Understand the word your way.

What Does It Mean Here?

Words can change meaning depending on context.

Use it yourself

Keep learning “bacillus” by choosing the kind of practice you need next.

Want to type words like this one without looking at the keyboard? Each typing round draws from words you've learned, saved or need to review. Follow the free Learn to Type lessons and type your own vocabulary with confidence.

Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.