noun · academic

decomposition

UK/ˌdiːkəmˈpəʊzɪʃ(ə)n/US/ˌdiːkəmˈpoʊzɪʃən/de·com·PO·si·tion

Band 7+task1task2speaking

the process by which organic matter is broken down into simpler substances by organisms or chemical processes

Examples

Warm, moist conditions accelerate the decomposition of leaf litter.

Decomposition releases nutrients that plants can reuse.

Microorganisms play a key role in the decomposition of organic waste.

Band 8 sentence

The rate of decomposition in tropical forests is rapid, which contributes to nutrient cycling but not to long-term carbon storage.

Collocations

  • rate of decomposition
  • accelerate decomposition
  • decomposer organisms

Word family

decompose verbdecomposer noundecomposed adj/verbal form

Common mistakes

the leaves compose quicklythe leaves decompose quickly

decomposition on the soildecomposition in the soil

Say it for a higher band

5decay6rot7+decomposition

Synonyms

decay

Easily confused

decay

The decomposition of organic matter is slower in cold climates than the decay observed in tropical forests.

Related words

Learn this word with the rest of its set, and get reminded at the right time.

In Nature & Animals

Learn it with its set