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nth

[enth] /ɛnθ/
adjective
1.
being the last in a series of infinitely decreasing or increasing values, amounts, etc.
2.
(of an item in a series of occurrences, planned events, things used, etc., that is thought of as being infinitely large) being the latest, or most recent:
This is the nth time I've told you to eat slowly.
Idioms
3.
the nth degree / power,
  1. a high degree or power.
  2. the utmost degree or extent:
    The new hotel was luxurious to the nth degree.
Origin
1850-1855
1850-55; N (symbol, def. 5) + -th2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for nth power

nth

/ɛnθ/
adjective
1.
(maths) of or representing an unspecified ordinal number, usually the greatest in a series of values: the nth power
2.
(informal) being the last, most recent, or most extreme of a long series: for the nth time, eat your lunch!
3.
(informal) to the nth degree, to the utmost extreme; as much as possible

Nth

abbreviation
1.
North
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for nth power

nth

1852, in phrase to the nth, figurative use of a mathematical term indicating indefinite number, in which n is an abbreviation for number (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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Idioms and Phrases with nth power
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Word Value for nth

6
6
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