ninth

American  

[nahynth] / naɪnθ /

adjective

1. next after the eighth; being the ordinal number for nine.

2. being one of nine equal parts.

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noun

• ninths
  plural

1. a ninth part, especially of one (1/9).

2. the ninth member of a series.

3. Music.

   1. a tone distant from another tone by an interval of an octave and a second.

   2. the interval between such tones.

   3. harmonic combination of such tones.

adverb

1. in the ninth place.

ninth British  

/ naɪnθ /

adjective

1. (usually prenominal)

   1. coming after the eighth in counting order, position, time, etc; being the ordinal number of nine. Often written: 9th

   2. ( as noun )

      he came on the ninth

      ninth in line

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noun

1. 1. one of nine equal or nearly equal parts of an object, quantity, measurement, etc

   2. ( as modifier )

      a ninth part

2. the fraction equal to one divided by nine ( 1/ 9 )

3. music

   1. an interval of one octave plus a second

   2. one of two notes constituting such an interval

   3. See ninth chord

adverb

1. Also: ninthly.  after the eighth person, position, event, etc

1. Also: ninthly.  as the ninth point: linking what follows to the previous statement

Other Word Forms

Derived Forms

• ninthly
  adverb

Inflected Forms

Nouns

• ninths
  plural

Etymology

Origin of ninth

before 900; Middle English ninthe ( see nine, -th ²), replacing Middle English niend ( Old English nigend ), neogethe, nigethe ( Old English nigotha ); akin to Old Saxon nigutho, Old Norse nīundi, Gothic niunda

Example Sentences

See Examples For:

ninth ninths

Sale got a standing ovation when he walked out for the ninth inning.

From Los Angeles Times ● Aug. 28, 2026

Raymond Lewis was in the ninth grade in Clarksdale, Miss., when Japan attacked Pearl Harbor on Dec. 7, 1941.

From The Wall Street Journal ● Aug. 27, 2026

Dodgers designated hitter Shohei Ohtani struck back with a triple off the left-field wall to lead off the ninth inning.

From Los Angeles Times ● Aug. 26, 2026

Further back, Fernando Alonso earned Aston Martin-Honda their first points since the incident-strewn Monaco race with an excellent drive on a one-stop strategy to ninth place.

From BBC ● Aug. 23, 2026

“No, the weekend after. The ninth I think my mother said. Maybe we’ll drive over to your house in the car.”

From "Firegirl" by Tony Abbott

Sofia has had three first place wins, a third, two fifths and two ninths.

From Time Magazine Archive

Other than wins, Sofia has had a third, two fifths and two ninths.

From Time Magazine Archive

Jagged with octave jumps, hard-to-land-on intervals of sevenths and ninths, and grinding dissonances, his high-tensioned 70-minute song cycle was even more difficult to sing than to listen to.

From Time Magazine Archive

So, Fifths, sixths, sevenths, eighths, ninths, tenths, &c.

From The Grammar of English Grammars by Goold Brown

They only babbled of theme and counter-theme, of harmonies and resultant sounds, of consecutive ninths and tierce major.

From Jean Christophe: in Paris The Market-Place, Antoinette, the House by Gilbert Cannan