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Wordabulary

exponential decay

Pronunciation
Noun B2 Upper-intermediate

Quick answer

A decrease in a quantity at a rate proportional to its current value, so it shrinks quickly at first and then more slowly.

"Radioactive substances lose their mass through exponential decay over time."

Synonyms and antonyms

Test yourself

Which word fits the gap? "Radioactive substances lose their mass through _____ over time."

Answer: exponential decay

In your own words, what does "exponential decay" mean?

A decrease in a quantity at a rate proportional to its current value, so it shrinks quickly at first and then more slowly.

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