xenno-

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English

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Etymology

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From Ancient Greek ἐννέα (ennéa, nine), for the ninth order of 103; with the letter x added for the third term in a series running backwards through the alphabet (after zepto- and yocto-). The final o conforms to the final vowels of the SI series from micro- downwards.

Prefix

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xenno-

  1. (informal) Synonym of ronto- (used before an official prefix existed). Symbol: x
    • 1994, IPC Magazines, New Scientist, volume 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.
    • 2002, Greg Egan, Schild's Ladder, Gollancz, published 2008, page 184:
      'Now we're talking xennobiology!' [...] a complex organism based on similar processes to the primitive ones they'd seen probably would be about a xennometre in size.
    • 2004 November, Seth Lloyd, Y. Jack Ng, “Black Hole Computers”, in Scientific American, page 56:
      From Nanotech to Xennotech [...] A one-kilogram hole has a radius of about 10-27 meter.

Usage notes

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

Antonyms

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Derived terms

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Category English terms prefixed with xenno- not found

Anagrams

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