Zetta- Definition
zetə
prefix
One sextillion (1021 ).
Zettahertz.
American Heritage
1,180,591,620,717,411,303,424 (270 ).
Zettabyte.
American Heritage
affix
One sextillion; the factor 1021
Zettabyte.
Webster's New World
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Origin of Zetta-
-
From alteration of Latin septem seven (from its representing the seventh power of a thousand) septet
From American Heritage Dictionary of the English Language, 5th Edition
prob. < It sette, seven, ult. < L septem: because the number is 1,000 to the seventh power
From Webster's New World College Dictionary, 5th Edition
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