eighth

American  

[eytth, eyth] / eɪtθ, eɪθ /

adjective

1. next after the seventh.

2. being one of eight equal parts.

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noun

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

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

In the eighth, the Bruins loaded the bases with none out on a walk, hit batter and infield single.

From Los Angeles Times • Apr. 4, 2026

The Tour Championship launched in 2019 and this is the eighth edition, with Robertson a two-time former winner, so Trump knew he was not to be underestimated.

From BBC • Apr. 3, 2026

Wilson entered “Summer House” in the eighth season and began dating Miller.

From Los Angeles Times • Apr. 3, 2026

Three years ago the winger worked as an Amazon delivery driver while playing in the eighth tier of English football for Crawley-based club Three Bridges.

From BBC • Apr. 3, 2026

We’re only in eighth grade, but everyone knows she’s already picked out her first three college choices, her probable major and potential minor and the focus of her eventual graduate studies.

From "Liar, Liar" by Gary Paulsen