zetta-

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zetta-

Prefix used in the metric system and SI to signify one sextillion (1021).
[var. of L. septem, seven (zetta- being 7th in the series of SI multiple prefixes)]

zetta-

[Fm. L. septem, seven, representing the seventh power of a thousand]
In the International System of Units (SI), a prefix signifying 1021 .