# eighth

Pronunciation: say "AYTTH" /eɪtθ/

## Adjective

1. The ordinal form matching the cardinal number eight; coming after the seventh in a sequence.
   - Simple: Coming after the seventh and before the ninth, the number eight in an order.
   - _The library reading room is on the eighth floor of the building._
   - _His eighth birthday party had a space theme._

## Noun

2. One of eight equal parts into which a whole is divided.
   - Simple: One part of something split into eight equal pieces.
   - _Roughly an eighth of the town's population voted in the local election._
   - _She measured out an eighth of the flour for the recipe._
3. The person or thing occupying the eighth position in a sequence.
   - Simple: The one that comes number eight in a group or order.
   - _He was the eighth in line to inherit the throne._
   - _The eighth on the waiting list finally got the last open seat._
4. Roughly 3.5 grams of marijuana or another drug: that is, an eighth of an ounce. *(slang)*
   - Simple: About three and a half grams of marijuana or another drug.
   - _She picked up an eighth on her way home from work._
   - _The dealer sold him an eighth for forty dollars._
5. In music, the interval between two pitches, one of which has twice the frequency of the other.
   - Simple: In music, the distance between two notes when one note is twice as high in pitch as the other.
   - _In strict counterpoint, the outer voices should begin and end on a perfect consonance: the unison, the fifth, or the eighth._
   - _She tuned the two strings an eighth apart._

## Verb

6. To divide something into eight equal parts.
   - Simple: To split something into eight equal parts.
   - _Line producers eighth each scene so they can estimate how long it will take to shoot._
   - _The assistant director spent the morning eighthing the script, page by page._

## Origin

Inherited from Middle English eiȝtthe, from Old English eahtoþa, from Proto-Germanic *ahtudô. It is equivalent to "eight" plus "-th", the ordinal number suffix.

Source: DictionaryAI, https://dictionaryai.com/define/eighth (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).