eighth

American  

[eytth, eyth] / eɪtθ, eɪθ /

adjective

1. next after the seventh.

2. being one of eight equal parts.

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noun

eighths plural

1. an eighth part, especially of one (⅛).

2. the eighth member of a series.

3. Music. octave.

adverb

1. in the eighth place; eighthly.

eighth British  

/ eɪtθ /

adjective

1. (usually prenominal)

   1. coming after the seventh and before the ninth in numbering or counting order, position, time, etc; being the ordinal number of eight: often written 8th

   2. ( as noun )

      the eighth in line

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noun

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

   2. ( as modifier )

      an eighth part

2. the fraction equal to one divided by eight ( 1/ 8 )

3. another word for octave

adverb

1. Also: eighthly.  after the seventh person, position, event, etc

Other Word Forms

Noun Inflected Forms

• eighths
  plural

Etymology

Origin of eighth

before 1000; Middle English eightethe, Old English eahtotha; cognate with Old High German ahtoda, Old Norse āttandi, Gothic ahtud-. See eight, -th ²

Example Sentences

See Examples For:

eighth eighths

Ten men suffered injuries Tuesday during the eighth and final bull run of Spain's famed San Fermin festival, bringing to 57 the total number of daredevils injured during this year's fiesta.

From Barron's ● Jul. 14, 2026

The 37-year-old was playing only the eighth Test of her 17-year-long international career, a reminder of the few opportunities her generation has had in the longest format.

From BBC ● Jul. 14, 2026

She said the audience member had broken the rules and "ruined the morale of our wonderful eighth show on a Saturday night from selfish actions".

From BBC ● Jul. 13, 2026

Last month, he carried a perfect game into the eighth inning and no-hitter into the ninth against the Chicago White Sox.

From Los Angeles Times ● Jul. 12, 2026

Calista punched the button for the eighth floor, and the elevator doors closed.

From Absolutely Almost by Lisa Graff

But its rhythm is stiff: stolid 4/4 time, brass and piano playing even eighths with little variation.

From Slate ● Feb. 23, 2017

His times for the first, second and third eighths of a mile were 11.6, 22.1 and 36.6 seconds, respectively.

From Washington Post ● May 13, 2016

Violist Alexander Bruck captured the magnetic eeriness of the "Capricho en Cuartos," a solo that divides the octave into eighths and 16ths.

From Los Angeles Times ● Dec. 13, 2015

Carroll's dismal form for seven eighths of the season forms part of the reason why Kenny Dalglish has been fired.

From The Guardian ● May 16, 2012

It was no fluke: in another clandestine workout not long after, the colt would tie a thirty-year-old world record for seven eighths of a mile, running it in 1:22.

From "Seabiscuit: An American Legend" by Laura Hillenbrand