chemostat: meaning, definition, pronunciation and examples
C2/TechnicalTechnical/Scientific
Quick answer
What does “chemostat” mean?
A laboratory apparatus used to culture microorganisms at a constant rate by controlling the supply of nutrients.
Audio
Pronunciation
Definition
Meaning and Definition
A laboratory apparatus used to culture microorganisms at a constant rate by controlling the supply of nutrients.
A device in microbial biotechnology and fermenter engineering that maintains a continuous, steady-state culture by controlling chemical input (e.g., limiting nutrient) and removing medium and cells at the same rate. The concept can also be extended metaphorically to any system controlled by a constant chemical environment.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Both regions use the term identically within scientific literature.
Connotations
None beyond its precise technical definition.
Frequency
Extremely rare in general discourse. Usage frequency is identical in UK and US scientific/academic contexts.
Grammar
How to Use “chemostat” in a Sentence
The researchers grew the bacteria [in a chemostat]A chemostat [was used] to maintain a constant population density.Vocabulary
Collocations
Examples
Examples of “chemostat” in a Sentence
verb
British English
- The culture was chemostatted at a dilution rate of 0.1 per hour.
American English
- They chemostatted the E. coli to study nutrient limitation.
adverb
British English
- [No standard adverbial form]
American English
- [No standard adverbial form]
adjective
British English
- The chemostat culture remained stable for weeks.
American English
- Chemostat conditions were maintained throughout the trial.
Usage
Meaning in Context
Business
Not used.
Academic
Standard term in microbiology, biochemical engineering, and evolutionary biology papers. Example: 'The evolution of antibiotic resistance was studied using a long-term chemostat experiment.'
Everyday
Virtually never used.
Technical
Core term in fermentation technology and microbial physiology. Used in laboratory manuals and equipment specifications.
Vocabulary
Synonyms of “chemostat”
Strong
Neutral
Weak
Vocabulary
Antonyms of “chemostat”
Watch out
Common Mistakes When Using “chemostat”
- Pronouncing it as /tʃemostat/ (with a 'ch' as in 'chair'). Correct pronunciation uses a /k/ sound.
- Confusing it with a general 'bioreactor' or 'fermenter'. A chemostat specifically implies continuous culture with controlled nutrient input.
FAQ
Frequently Asked Questions
A chemostat is a specific type of fermenter or bioreactor designed for continuous culture, where fresh medium is added and spent medium/cells are removed at the same rate to maintain a steady state. Not all fermenters operate as chemostats.
Primarily in microbiology, biochemical engineering, biotechnology, and evolutionary biology. It is a core concept in studies of microbial growth kinetics and continuous industrial fermentation processes.
The suffix '-stat' comes from Greek, meaning 'standing', 'stationary', or 'constant'. It indicates a device that keeps a condition constant (e.g., thermostat, heliostat).
Yes, in technical jargon. To 'chemostat' a culture means to grow it in a chemostat or under chemostat-like conditions. This usage is common in research papers.
A laboratory apparatus used to culture microorganisms at a constant rate by controlling the supply of nutrients.
Chemostat is usually technical/scientific in register.
Chemostat: in British English it is pronounced /ˈkiːmə(ʊ)stat/, and in American English it is pronounced /ˈkiːmoʊˌstæt/ or /ˈkɛmoʊˌstæt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No idioms use this technical term]”
Learning
Memory Aids
Mnemonic
Think: 'CHEMical' environment kept 'STATic' (constant) in the device.
Conceptual Metaphor
A CHEMOSAT IS A CONTROLLED ENVIRONMENT; often conceptualised as a 'microbial habitat' or a 'steady-state machine' in scientific discourse.
Practice
Quiz
What is the primary purpose of a chemostat?