mole
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
The SI unit for the amount of a substance, equal to a fixed number of particles, roughly 6.02 times ten to the twenty-three.
Usage notes
In chemistry "mole" refers to this unit of amount, an entirely different word from the small burrowing animal.
Test yourself
Which word fits the gap? "A _____ of carbon atoms weighs almost exactly twelve grams."
Answer: mole
In your own words, what does "mole" mean?
The SI unit for the amount of a substance, equal to a fixed number of particles, roughly 6.02 times ten to the twenty-three.
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