# thirty

Pronunciation: say "THUR-tee" US /ˈθɝti/, UK /ˈθɜːti/

## Numeral

1. The cardinal number that follows twenty-nine and precedes thirty-one, written as 30 in Arabic numerals.
   - Simple: The number that comes after twenty-nine and before thirty-one, written as 30.
   - _The recipe makes thirty cookies, enough to share with the whole class._
   - _He turned thirty at a quiet dinner with close friends._

## Noun

2. A broadcast advertisement that runs for thirty seconds.
   - Simple: A short TV or radio ad that lasts thirty seconds.
   - _We're running a thirty in prime time and a shorter spot online._
   - _The client approved two thirties for the fall campaign._
3. A rack of thirty cans of beer, sold as a single pack. *(slang)*
   - Simple: A pack of thirty cans of beer sold together.
   - _He showed up to the party with a thirty under each arm._
   - _A couple of thirties should be plenty for the cookout._

## Origin

From Middle English "thirty," an altered form of "thriti," from Old English "þrītiġ" (thirty), from Proto-Germanic "*þrīz tigiwiz," literally "three tens": equivalent to "three" plus "-ty." It is related to Dutch "dertig" and German "dreißig."

Source: DictionaryAI, https://dictionaryai.com/define/thirty (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).