Definition

Noun: - A unit of volume measurement: An acre-inch is a unit of volume equal to one twelfth of an acre-foot. It is primarily used in the United States to measure large volumes of water, especially in irrigation, reservoir management, and hydrology.

Usage

• The term "acre inch" is used as a compound noun to specify a precise quantity of water volume over an area.
• It is a technical term most commonly found in agricultural, engineering, and water resource contexts.

Examples

• Noun:
  • The farmer calculated that the new crop would require an additional three acre-inches of water per season.
  • The reservoir's level rose by several acre-inches after the spring rains.

Advanced Usage

• "Acre-inch" as a standard measure: In water rights and allocation, legal documents often specify water amounts in acre-inches or acre-feet.
  • The water district allocated each parcel 2.5 acre-inches for the summer irrigation period.

Variants and Related Words

• Acre-foot (n): A larger unit of volume equal to the volume of one foot of water covering one acre of area (43,560 cubic feet). An acre-inch is 1/12 of an acre-foot.
• Water measurement: The general field in which units like acre-inch are used.

Synonyms

• Volume unit: While not a direct synonym, "acre-inch" belongs to the category of units for measuring volume, specifically fluid volume over land area.

Notes on Meaning

• The term is a compound of "acre" (a unit of area) and "inch" (a unit of length), but together they define a unit of volume. It represents a volume one inch deep covering one acre of surface area.
• It is a fixed, standardized measurement and should not be confused with a casual description of depth over an area.

Noun

1. one twelfth of an acre-foot