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thousandth

American  
[thou-zuhndth, -zuhntth, -zuhnth] / ˈθaʊ zəndθ, -zəntθ, -zənθ /

adjective

  1. last in order of a series of a thousand.

  2. being one of a thousand equal parts.


noun

  1. a thousandth part, especially of one (1/1000).

  2. the thousandth member of a series.

  3. Also thousandth's place (in decimal notation) the position of the third digit to the right of the decimal point.

ˈthousandth British  
/ ˈθaʊzənθ /

adjective

  1. (usually prenominal)

    1. being the ordinal number of 1000 in numbering or counting order, position, time, etc

    2. ( as noun )

      the thousandth in succession

"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

noun

    1. one of 1000 approximately equal parts of something

    2. ( as modifier )

      a thousandth part

  1. one of 1000 equal divisions of a particular scientific quantity

    millivolt

  2. the fraction equal to one divided by 1000 ( 1/ 1000 )

"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

Etymology

Origin of thousandth

First recorded in 1545–55; thousand + -th 2