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zero hour


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The entry for "zero" is displayed below.

Also see: hour
WordReference Collins English Usage © 2026
zero
Zero is the number 0.
Visibility dropped to zero.
Participants rated the products on a scale of zero to five.
In conversation, British speakers often say nought or oh instead of ‘zero’.
How good was the hotel, on a scale of nought to ten?
You arrive at Palma at oh two thirty-five.
American speakers usually use zero, in both conversation and writing.
The group is for infants between zero and three.
Numbers and fractions
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