femto-

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 10⁻¹⁵ (short scale quadrillionth or long scale billiardth). morpheme

词源

Etymology tree
Proto-Indo-European *pénkʷe
Proto-Germanic *fimf
Proto-Indo-European *déḱm̥
Proto-Germanic *tehun
Proto-Germanic *fimftehun
Old Norse fimmtánder.
Danish femtender.
English femto-
From Danish femten (“fifteen”), with reference to the (negative) exponent in the relevant power of ten; the same principle also explains atto-.
0 次浏览 数据来源: Wiktionary