atto-

前缀
中文释义

英文释义

前缀
  1. In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10⁻¹⁸ (short scale quintillionth or long scale trillionth). morpheme

词汇关系

反义词
exa-

词源

From Danish atten (“eighteen”), with reference to the (negative) exponent in the relevant power of ten; the same principle also explains femto-.
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