Topic: GEOLOGY
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in‧ac‧tive

1 not doing anything, not working, or not moving [≠ active]:
The brain cells are inactive during sleep.
Young people are becoming politically inactive.
The brain cells are inactive during sleep.
Young people are becoming politically inactive.2 not taking part in something that normally you would take part in :
Graham's knee injury means he will be inactive for Sunday's game.
Graham's knee injury means he will be inactive for Sunday's game.3 technical an inactive substance does not react chemically with other substances
