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

Ann was told that she could spend 10 days with her baby but on the eighth day she went to the nursery and he wasn't there.

From BBC ● Aug. 30, 2026

Chelsea and Manchester City also qualified directly for the last 16 after finishing sixth and eighth respectively while Newcastle finished 12th.

From BBC ● Aug. 27, 2026

“I grew up playing basketball and football and realized I wasn’t going to be 7-foot tall, so I tried to focus on football once I hit eighth grade.”

From Los Angeles Times ● Aug. 26, 2026

Notice that seven of the nine are projecting that the S&P 500 will significantly lag inflation over the next decade, while an eighth is projecting a flat real return.

From MarketWatch ● Aug. 24, 2026

I glanced out one of the broken windows; since the floor below me didn’t appear to be on fire, I decided that I was probably on the eighth floor.

From "Glitch" by Laura Martin

He splits the tree into eighths using a wooden mallet, axes and wedges.

From Washington Post ● May 21, 2019

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

From Slate ● Feb. 23, 2017

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

I watched, horrified, as she tore it into quarters, then eighths.

From "City of the Plague God" by Sarwat Chadda