A "fifth" in liquor terms refers to a bottle containing 750 milliliters of liquid, which is approximately 25.36 fluid ounces. This measurement originated from being one-fifth of a US liquid gallon. Therefore, a fifth holds about 25.36 ounces of liquid.
To summarize:
- One fifth = 750 ml
- Approximately 25.36 fluid ounces in a fifth
This is the standard size for most liquor bottles in the United States.
