- 1(pl. zeros) 0 Five, four, three, two, one, zero… We have liftoff.
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- 2a temperature, pressure, etc. that is equal to zero on a scale It was ten degrees below zero last night (= −10°C). The thermometer had fallen to zero.
- 3the lowest possible amount or level; nothing at all I rated my chances as zero. zero inflation
Check pronunciation: zero