English Reference
noun

acre

n.
US /ˈeɪkɝ/ acre UK spelling acre's, acre's

  1. 01 B2 Upper Intermediate

    a unit for measuring an area of land, equal to 4,840 square yards.

    a unit of land area measurement in the imperial and US customary systems, equivalent to 4,840 square yards or approximately 4,047 square metres.

    Simple

    The farmer decided to sell ten acres of his land to a developer.

    In context

    The estate encompasses over five hundred acres of rolling hills and ancient woodland, making it one of the largest private holdings in the county.

    Usage

    Countable; often used with numbers to specify the size of a property.

  2. 02 C1 Advanced Informal

    a very large area of land or space.

    a wide expanse or large area of land, typically used in the plural to emphasize size.

    Simple

    The new shopping mall has acres of parking space for customers.

    In context

    The library was vast, with acres of shelving dedicated to rare manuscripts and historical records.

    Usage

    Usually plural ('acres of').

  3. 03 C1 Advanced Informal

    a very large amount of something, like paper or information.

    a figurative large quantity of something, often used to describe written material or physical objects.

    Simple

    The journalist wrote acres of text about the political scandal.

    In context

    The project generated acres of paperwork that the legal team had to review before the trial could begin.

    Usage

    Usually plural ('acres of').

The blaze has already burned 1,100 hectares (about 2,700 acres) in the department of Landes, approaching the village of Luglon.

The Local· 14 Aug 2026

In the Rhinogydd mountain range in Gwynedd, which is home to a National Nature Reserve and a Special Area of Conservation, a blaze burned for nearly two weeks and affected over 2,000 acres.

BBC News· 7 Aug 2026

Etymology 1

Borrowed from French and Latin Acre, from Ancient Greek Ἄκο (Áko) or Ἄκη (Ákē), from Hebrew עכו (ʿAkko), of unknown origin.

Etymology 2

From Portuguese Acre, of uncertain origin.

Etymology 3

Probably a variant of Acker or Acree/Ackary, though also possibly Americanization of Norwegian Aakre or Low German Egger.

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

This entry
Origin he עכו
Level C1 · Advanced
Frequency Frequent
Updated