- a cardinal number, 10 times 3.
- a symbol for this number, as 30 or XXX.
- a set of this many persons or things.
- Printing, Journalism. 30-dash.
- 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.
- amounting to 30 in number.
Origin of thirty
Examples from the Web for thirty
Contemporary Examples of thirty
Along with her husband Kevin, she owns Thirty Acres, a seasonal farm-to-table restaurant in Jersey City.High Rents Are Killing the Restaurant Capital
October 28, 2014
Michaud spent thirty years as millworker and a member of the local union.America’s First Post-Gay Governor
October 24, 2014
Thirty percent of those cleared by the Innocence Project had confessed to their crimes.The Myth of the Central Park Five
October 19, 2014
I don't mean he proved that a thirty- or forty-minute solo is necessarily better than a three-minute one.The Stacks: John Coltrane’s Mighty Musical Quest
October 18, 2014
When the car stopped rolling, I was laying thirty feet from the car unconscious and covered in blood.Miles Teller’s Movie Star Moment: From the Brink of Death to ‘Whiplash’
October 14, 2014
Historical Examples of thirty
Some horrible accident might happen to delay us here thirty minutes.The Spenders
Harry Leon Wilson
On the 14th, therefore, we started, carrying with us about thirty gallons of water.
To the east, plains for at least thirty miles, when broken ranges were visible.
They and their horses had been over thirty hours without water.
He was thirty years in my governor's service, and doesn't understand my ways.Viviette
William J. Locke
- the cardinal number that is the product of ten and threeSee also number (def. 1)
- a numeral, 30, XXX, etc, representing this number
- (plural) the numbers 30–39, esp the 30th to the 39th year of a person's life or of a century
- the amount or quantity that is three times as big as ten
- something representing, represented by, or consisting of 30 units
- amounting to thirtythirty trees
- (as pronoun)thirty are broken
Word Origin 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."