Meaning | A system of units used to measure areas. |
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Synonym | square measure |
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Narrower | acre | A unit of area (4840 square yards) used in English-speaking countries |
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agate line, line | Space for one line of print (one column wide and 1/14 inch deep) used to measure advertising |

are, ar | A unit of surface area equal to 100 square meters |

arpent | A former French unit of area |

barn, b | (physics) a unit of nuclear cross section |

column inch, inch | A unit of measurement for advertising space |

dessiatine | A former Russian unit of area equal to 2.7 acres |

em, em quad, mutton quad | A quad with a square body |

hectare | (abbreviated 'ha') a unit of surface area equal to 100 ares (or 10,000 square meters) |

morgen | A South African unit of measure equal to about 2 acres |

perch, rod, pole | A square rod of land |

quarter section | A land unit equal to a quarter of a section (160 acres) and measuring 1/2 mile on a side |

square foot, sq ft | A unit of area equal to one foot by one foot square |

square inch, sq in | A unit of area equal to one inch by one inch square |

square meter, square metre, centare | A centare is 1/100th of an are |

square mile | An area of 640 acres |

square yard, sq yd | A unit of area equal to one yard by one yard square |

Broader | unit of measurement, unit | Any division of quantity accepted as a standard of measurement or exchange |
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Catalan | unitat mètrica de superfície |
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