# thirteenth

Pronunciation: say "thur-TEENTH" US /ˌθɝˈtiːnθ/, UK /ˌθɜːˈtiːnθ/

## Adjective

1. Occupying position number thirteen in a sequence or order; the ordinal that corresponds to thirteen.
   - Simple: Coming right after the twelfth in a counted order, matching the number thirteen.
   - _Her name appeared on the thirteenth page of the report._
   - _The thirteenth chapter finally explained the mystery._

## Noun

2. The person or thing occupying position number thirteen in a series.
   - Simple: The one that comes after the twelfth in a row or order.
   - _Among the climbers, she became the thirteenth to reach the summit._
   - _His invention was the thirteenth in a long line of failed prototypes._
3. Any one of thirteen equal parts into which a whole is divided.
   - Simple: One part out of thirteen equal parts of something.
   - _Each shareholder was entitled to a thirteenth of the annual profit._
   - _The recipe calls for a thirteenth of the total flour in each batch._
4. Day number thirteen within a given calendar month.
   - Simple: The day numbered thirteen within a month.
   - _The rent is always due on the thirteenth, regardless of the month._
   - _The festival opens on the thirteenth and runs through the weekend._
5. A musical interval spanning an octave plus a sixth.
   - Simple: A musical distance equal to an octave plus six more notes above a starting note.
   - _The arranger added a thirteenth to enrich the closing chord._
   - _Jazz pianists often voice a dominant thirteenth for a fuller sound._

## Origin

From Old English þrēottēoþa, equivalent to "thirteen" combined with the ordinal suffix "-th".

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