The thousandth item in a series is the one that you count as number one thousand.
The magazine has just published its six thousandth edition.
If you say that something has happened for the thousandth time, you are emphasizing that it has happened again and that it has already happened a great many times.
[emphasis]
The phone rings for the thousandth time.
2. fraction
A thousandth is one of a thousand equal parts of something.
...a dust particle weighing only a thousandth of a gram.
thousandth in British English
(ˈθaʊzənθ)
adjective
1. (usually prenominal)
a.
being the ordinal number of 1000 in numbering or counting order, position, time, etc
b.
(as noun)
the thousandth in succession
noun
2.
a.
one of 1000 approximately equal parts of something
b.
(as modifier)
a thousandth part
3.
one of 1000 equal divisions of a particular scientific quantity
millivolt
▶ Related prefix: milli-
4.
the fraction equal to one divided by 1000 (1⁄1000)
thousandth in American English
(ˈθaʊzəndθ)
adjective
1.
coming last in a series of a thousand; 1,000th
2.
designating any of the thousand equal parts of something
noun
3.
the thousandth one of a series
4.
any of the thousand equal parts of something; 1⁄1000
Word origin
thousand + -th2
Examples of 'thousandth' in a sentence
thousandth
Nichols took the opportunity to look the cabin over for the thousandth time.
Lunnon-Wood, Mike LET NOT THE DEEP (2004)
`Top of his class," Jefferson said, and Mahoney wondered for the thousandth time how the man could have no doubts.
Davis, John Gordon SEIZE THE RECKLESS WIND (2004)
And for the thousandth time I wondered why he left it to me in his will.
Matthews, Lew A CONVICTION OF GUILT (2004)
Just as it began to get dark, Jimbo looked at the house for the thousandth time and said,'We're such a couple of dopes.
Peter Straub LOST BOY LOST GIRL (2004)
In other languages
thousandth
British English: thousandth /ˈθaʊzənθ/ ADJECTIVE
The thousandth item in a series is the one you count as number one thousand.
The magazine has just published its six thousandth edition.
American English: thousandth
Arabic: الأَلْف
Brazilian Portuguese: milésimo
Chinese: 第一千
Croatian: tisuću
Czech: tisící
Danish: tusinde
Dutch: duizendste
European Spanish: milésimo
Finnish: tuhannes
French: millième
German: tausendster
Greek: χιλιοστός
Italian: millesimo
Japanese: 千番目の
Korean: 천 번째의
Norwegian: tusende
Polish: tysięczny
European Portuguese: milésimo
Romanian: al miilea
Russian: тысячный
Latin American Spanish: milésimo
Swedish: tusende
Thai: ที่หนึ่งพัน
Turkish: bininci
Ukrainian: тисячний
Vietnamese: thứ một nghìn
British English: thousandth /ˈθaʊzənθ/ NOUN
A thousandth is one of a thousand equal parts of something.
...a dust particle weighing only a thousandth of a gram.