English Reference

Word

eighth

US/ˈeɪtθ/

UK/ˈeɪtθ/

Definitions

01position in a sequence

A2

num. coming after the seventh and before the ninth.

num. the ordinal number matching the cardinal number eight in a sequence.

“This is the eighth time I have tried to call the bank today.”

“The eighth chapter provides a comprehensive summary of the research findings, bridging the gap between the initial hypothesis and the final data analysis.”

02a fraction

B1 · Math

n. one of eight equal parts of a whole.

n. one of eight equal parts into which something is or may be divided.

“He cut the pizza into slices, and I ate an eighth of it.”

“The carpenter carefully measured an eighth of an inch to ensure the cabinet door would close perfectly against the frame.”

03music interval

B2 · Music

n. the distance between one musical note and the next note with the same name.

n. an interval of an octave, representing the distance between one musical pitch and another with double its frequency.

“The singer struggled to reach the high note an eighth above the melody.”

“The composition requires the pianist to play a series of rapid eighths, demanding significant finger strength and precise timing.”

Synonyms

04drug measurement

C1

n. a small amount of a drug, usually weighing about 3.5 grams.

n. a unit of measurement for illicit drugs, specifically one-eighth of an ounce.

“He was arrested for carrying an eighth of cannabis in his pocket.”

“The dealer was known for selling an eighth at a higher price than the market average, claiming his product was of superior quality.”

Slang

05to divide by eight

C2 · Math

v. to divide something into eight parts.

v. to divide a quantity or object by eight. Transitive use.

“The total cost was eighthed so that each partner paid an equal share.”

“In this specific calculation, the initial value must be eighthed before the final coefficient is applied to the result.”

Technical

Etymology

Inherited from Middle English eightethe, from Old English eahtoþa, from Proto-Germanic *ahtudô; equivalent to eight + -th (ordinal suffix).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
A2 · Elementary
Frequency
Common
Updated

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English Reference