zebi-

Etymology
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Prefix

 * 1) The IEC prefix meaning 270 = 1,0247 = 1,180,591,620,717,411,303,424. Compare zetta-, meaning 1021 = 1,0007 = 1,000,000,000,000,000,000,000, a sextillion.

Usage notes
Not yet in widespread use, this binary multiple prefix was established to make various units used in computing precise. See for discussion.