English noun: Zb | 
| 1.  | Zb (quantity) a unit of information equal to 1000 exabits or 10^21 bits | 
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  | Synonyms | Zbit, zettabit | 
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  | Broader (hypernym) | computer memory unit | 
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  | Part holonym | Eb, Ebit, exabit | 
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  | Part meronym | Yb, Ybit, yottabit | 
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| 2.  | ZB (quantity) a unit of information equal to 1000 exabytes or 10^21 bytes | 
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  | Synonyms | zettabyte | 
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  | Broader (hypernym) | computer memory unit | 
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  | Part holonym | EB, exabyte | 
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  | Part meronym | YB, yottabyte | 
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| 3.  | ZB (quantity) a unit of information equal to 1024 exbibytes or 2^70 bytes | 
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  | Synonyms | zebibyte, zettabyte, ZiB | 
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  | Broader (hypernym) | computer memory unit | 
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  | Part holonym | EB, EiB, exabyte, exbibyte | 
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  | Part meronym | YB, YiB, yobibyte, yottabyte | 
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