quadrilliard

From French quadrilliard, equivalent to quadri- +‎ -illiard.

quadrilliard (rare)

1. A thousand million million million million: 1 followed by twenty-seven zeros, 10²⁷.
   • 2002 June 19, bruce, “Re: Australians did it again! (?)”, in alt.fan.robert-jordan, Usenet, message-ID <cs9qea.as3.ln@ID-92747.user.dfncis.de>:

     Ugh. An Australian should use Australian numbers (the same as British), not American. 10^27 is 1,000 quadrillion (or a quadrilliard). An octillion would be 10^48.

   • 2003 December 3, arie, “Re: Why Women "Test" Men, and What Men can Do About It”, in alt.support.loneliness, Usenet, message-ID <bqkc2m$dg9$1@news.tudelft.nl>:

     Your estimation was quite accurate. In a body of 75 kg of water, there are roughly 2.5 x 10^28. That's 25 octillion (US) or 25 quadrilliard (EU).

   • 2014 May 16, Buckingham, Lela, “Chapter 3: Systems of Measurement”, in Fundamental Laboratory Mathematics: Required Calculations for the Medical Laboratory Professional, Philadelphia: F. A. Davis Company, →ISBN, Box 3-3: Terms for Large Numbers, page 47:

     In the European system, 10⁹ is a milliard, 10¹² is a billion, 10¹⁵ is a billiard, 10¹⁸ is a trillion, 10²¹ is a trilliard, 10²⁴ is a quadrillion, and 10²⁷ is a quadrilliard. To avoid confusion in expressing these numbers, the SI prefixes are preferred.

• a short scale octillion

• Previous: quadrillion. Next: quintillion.

From quadri- (“four”) +‎ -illiard.

• IPA^(key): /kwa.dʁi.ljaʁ/, /ka.dʁi.ljaʁ/

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quadrilliard m (plural quadrilliards)

1. octillion (10²⁷)