| 释义 |
zepto-
zepto-pref. One sextillionth (10-21): zeptosecond.
[From alteration of Latin septem, seven (from its representing the seventh power of a thousandth); see septet.]zepto-
zep·to- (z), 1. Prefix used in the SI and metric systems to signify submultiples of 10-21. 2. Prefix used in the metric system and SI to signify one sextillionth (10-21). zepto- (z)Prefix used in the SI and metric system to signify 10-21. zepto- [Fm L. septem, seven, representing the seventh power of a thousandth] In the International System of Units (SI), a prefix signifying 10-21. |