chemotroph: meaning, definition, pronunciation and examples
RareAcademic / Technical
Quick answer
What does “chemotroph” mean?
An organism that obtains energy by oxidizing inorganic or organic chemical compounds.
Audio
Pronunciation
Definition
Meaning and Definition
An organism that obtains energy by oxidizing inorganic or organic chemical compounds.
A life form (e.g., certain bacteria, archaea) that derives its metabolic energy from chemical reactions rather than from sunlight (phototroph). Often found in extreme environments like deep-sea vents.
Dialectal Variation
British vs American Usage
Differences
No significant orthographic, phonetic, or semantic differences.
Connotations
Purely technical term with identical neutral, scientific connotations.
Frequency
Equally rare and specialised in both varieties.
Grammar
How to Use “chemotroph” in a Sentence
[Chemotroph] + [verb: obtain, derive, utilise, oxidise] + [energy/nutrients] + [from] + [chemical compound]Vocabulary
Collocations
Examples
Examples of “chemotroph” in a Sentence
verb
British English
- The bacteria chemotrophically oxidise hydrogen sulphide.
American English
- These organisms chemotrophically derive energy from reduced minerals.
Usage
Meaning in Context
Business
Not used.
Academic
Central term in microbial ecology, astrobiology, and early Earth evolution studies.
Everyday
Not used.
Technical
Precise classification in microbiology textbooks and research papers.
Vocabulary
Synonyms of “chemotroph”
Neutral
Weak
Vocabulary
Antonyms of “chemotroph”
Watch out
Common Mistakes When Using “chemotroph”
- Spelling: 'chematroph', 'chemotrope'.
- Misuse: Using it for any organism that consumes chemicals (e.g., all animals), rather than for specific microbes deriving *energy* from chemical oxidation.
FAQ
Frequently Asked Questions
No. Humans are chemoorganotrophs (we get energy from organic chemicals like glucose), but the term 'chemotroph' is typically reserved for microbes that use inorganic chemicals. We are more precisely termed heterotrophs.
A chemotroph gets energy from chemical reactions, while a phototroph gets energy from light (photosynthesis).
They are prevalent in environments devoid of sunlight, such as deep-sea hydrothermal vents, underground aquifers, caves, and within certain soils.
Yes. Chemosynthesis is the process by which some chemotrophs (specifically chemoautotrophs) convert inorganic carbon into organic matter using chemical energy.
An organism that obtains energy by oxidizing inorganic or organic chemical compounds.
Chemotroph is usually academic / technical in register.
Chemotroph: in British English it is pronounced /ˈkiːməʊtrəʊf/, and in American English it is pronounced /ˈkiːmoʊtroʊf/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: CHEMical + nourish (from Greek trophē). It's fed by chemicals, not by light.
Conceptual Metaphor
CHEMICALS ARE FOOD / ENERGY CURRENCY.
Practice
Quiz
What is the primary energy source for a chemotroph?