follow Dictionary.com

Stories We Like: Novels For Language Lovers

thirty

[thur-tee] /ˈθɜr ti/
noun, plural thirties.
1.
a cardinal number, 10 times 3.
2.
a symbol for this number, as 30 or XXX.
3.
a set of this many persons or things.
4.
Printing, Journalism. 30-dash.
5.
thirties, the numbers, years, degrees, or the like, from 30 through 39, as in referring to numbered streets, indicating the years of a lifetime or of a century, or referring to degrees of temperature:
He works in the East Thirties. She must be in her thirties. The temperature was in the thirties yesterday.
adjective
6.
amounting to 30 in number.
Origin
900
before 900; Middle English thritty, Old English thrītig, equivalent to thrī three + -tig -ty1; cognate with Dutch dertig, German dreissig, Old Norse thrjātīu
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for thirty
  • Each of the thirty legislative districts has one senator and two representatives.
  • thirty percent of the profits from gambling machines come from problem gamblers.
  • Speer surrounded the site with one hundred and thirty antiaircraft searchlights.
  • thirty minutes after the hour is commonly called half past in both bre and ame.
  • Tesla made a proposal that there needed to be thirty such antennas worldwide.
  • For example, thirty helens agree if you have a good idea, you should write it down.
  • This is the culmination of my striving for last thirty six years.
  • But about thirty years ago, credit rolls began to grow greatly in length.
  • Nelson sunk a thirty foot putt to tie on the ninth and final hole.
  • He was to remain there for thirty years, eventually becoming professor of composition.
British Dictionary definitions for thirty

thirty

/ˈθɜːtɪ/
noun (pl) -ties
1.
the cardinal number that is the product of ten and three See also number (sense 1)
2.
a numeral, 30, XXX, etc, representing this number
3.
(pl) the numbers 30–39, esp the 30th to the 39th year of a person's life or of a century
4.
the amount or quantity that is three times as big as ten
5.
something representing, represented by, or consisting of 30 units
determiner
6.
  1. amounting to thirty: thirty trees
  2. (as pronoun): thirty are broken
Word Origin
Old English thrītig; see three, -ty1
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
Cite This Source
Word Origin and History for thirty

early 15c. metathesis of Old English þritig, from þri, þreo "three" + -tig "group of ten" (see -ty (1)). Cf. Old Frisian thritich, Old Saxon thritig, Dutch dertig, Old High German drizzug, German dreissig. Thirty Years' War (1842) was a religious power struggle waged 1618-48, mainly on German soil. The symbol -30- as printer and telegrapher's code to indicate the last sheet or line of copy or a dispatch is recorded from 1895. In 20c. jargon of journalism, it came to be a traditional sign-off signal and slang word for "the end."

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Slang definitions & phrases for thirty

thirty

Related Terms

oh-dark-thirty


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
Cite This Source

Word of the Day

Difficulty index for thirty

Most English speakers likely know this word

Word Value for thirty

12
10
Scrabble Words With Friends

Quotes with thirty