xennaとは 意味・読み方・使い方

発音

• IPA^(key): /ˈzɛnə/

接頭辞

xenna-

1. (informal) Synonym of ronna- (used before an official prefix existed). Symbol: X
   • 1994, IPC Magazines, New Scientist Vol. 144, page 81:

     The SI prefixes above are not the only extreme ones. Others such as xenno (x) (10^-27) and xenna (X) (10²⁷), or vendeko (v) (10^-33) and vendeka (V) (10³³) exist, and can help simplify the expression of extreme numbers.

   • 1997, Council of Scientific & Industrial Research, Science Reporter Vol. 34, page 23:

     If we try to calculate the mass of earth it comes to 6 xennagrams which is nothing but 6x10²⁴ kilograms or 6x10²⁷ gms.

   • 2015, Claude Phipps, No Wonder You Wonder!: Great Inventions and Scientific Mysteries, Springer, page 62:

     But that's nothing: our universe is about 0.8 Xm (Xennametres, billions of billions of billions of metres) in diameter.

   • For more quotations using this term, see Citations:xenna-.

反意語

• xenno-

使用する際の注意点

Not a standard prefix in the metric International System of Units.

派生語