thirty - WordReference.com Dictionary of English

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thirty

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Concise Oxford English Dictionary © 2008 Oxford University Press:
thirty/ˈθɜːti/

▶cardinal number (pl. thirties) the number equivalent to the product of three and ten; ten less than forty; 30. (Roman numeral: xxx or XXX)

– derivatives
thirtieth ordinal number,
thirtyfold adjective & adverb.

– origin OE thrītig (see three, -ty2).

'thirty' also found in these Oxford entries:

axe - compass card - crystal class - écarté - euchre - generation - half - half-hour - octodecimo - Old Testament - point - sextodecimo - something - tanka - Thirty-nine Articles - thirty-second note - thirty-year rule - trente et quarante - twenty - @

Forum discussions with the word(s) "thirty" in the title:

(?) I'm as energetic as I was energetic when I was thirty yeas old.
(on) the wrong side of thirty
"thirty or so white mice" in nursery rhymes
"thirty-one sweep"
a thirty-thirty
a thirty-year-old internist in training
bring his 'thirty ought' with him [aught]
by the eight-thirty
fewer / less than thirty sheets
For my thirty-third birthday, I wanted breakfast with Mark T
give someone "thirty to life"
Halloween is thirty-first of October
His wife of thirty years
I will be home in thirty minutes..
in/during the next thirty minutes
ladies over/under thirty [includes thirty-year-old ladies?]
nine-thirty
on the four-thirty
Pronunciation: thirty, forty
six months shy of his thirty
slated for between one and one thirty
The shop opens at eight thirty (8:30) a.m.
The usage of a dash (-) when writing numbers: thirty(-) four
the while that some twenty or thirty pages
They were to meet at about seven-thirty.
thirty all [Tennis game term]
thirty degrees in the north latitude
Thirty divided by four
Thirty going on seventy!
thirty hundred something thousand
more...

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