department

American  

[dih-pahrt-muhnt] / dɪˈpɑrt mənt /

noun

1. a distinct part of anything arranged in divisions; a division of a complex whole or organized system.

   Synonyms:

   segment, unit, section, bureau, branch

2. one of the principal branches of a governmental organization.

   the sanitation department.

3. (initial capital letter) one of the principal divisions of the U.S. federal government, headed by a secretary who is a member of the president's cabinet.

4. a division of a business enterprise dealing with a particular area of activity.

   the personnel department.

5. a section of a retail store selling a particular class or kind of goods.

   the sportswear department.

6. one of the sections of a school or college dealing with a particular field of knowledge.

   the English department.

7. one of the large districts into which certain countries, as France, are divided for administrative purposes.

8. a division of official business, duties, or functions.

   judicial departments.

9. a sphere or province of activity, knowledge, or responsibility.

   Paying the bills is not my department.

10. (usually initial capital letter) (formerly) a large geographical division of the U.S. or its possessions as divided for military and defense purposes.

    the Hawaiian Department.

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department British  

/ dɪˈpɑːtmənt, ˌdiːpɑːtˈmɛntəl /

noun

1. a specialized division of a large concern, such as a business, store, or university

   the geography department

2. a major subdivision or branch of the administration of a government

3. a branch or subdivision of learning

   physics is a department of science

4. a territorial and administrative division in several countries, such as France

5. informal a specialized sphere of knowledge, skill, or activity

   wine-making is my wife's department

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Other Word Forms

• departmental
  adjective
• departmentally
  adverb
• nondepartmental
  adjective
• nondepartmentally
  adverb
• predepartmental
  adjective
• subdepartment
  noun
• subdepartmental
  adjective

Etymology

Origin of department

First recorded in 1730–35; from French département; equivalent to depart + -ment

Explanation

A department is one section or part of a larger group, like a company or a school. The philosophy department of a university is just one of many, including English, math, and sociology. Your local hospital has an emergency department, as well as surgical and mental health departments, or units. A company might have finance departments and hiring departments, and a town government has public works and fire departments. A "department store" is likewise split into sections. In each case, the departments specialize in one certain aspect of the organization. You can also say, "Making cookies is my department," if you're the person in your family who's the baking expert.

Example Sentences

He claims to have found a copy of “Lunch on a Beam,” also known as “Lunch Atop a Skyscraper,” at an Austrian department store in 1989 and recognized it from an old family album.

From The Wall Street Journal • May 22, 2026

Michael Cohen, the president's former lawyer who spent time behind bars for lying to investigators, tax evasion and campaign finance violations, told US media he also plans to request money from the justice department initiative.

From BBC • May 22, 2026

Wahl said the department is a “couple hundred” officers short of its budget.

From Los Angeles Times • May 22, 2026

A DOJ spokesperson told Salon that the department does not comment on grand jury subpoenas or investigations.

From Salon • May 22, 2026

One of them was Macy's, the world's largest department store and sponsor of the Macy's Thanksgiving Day Parade.

From Nazi Saboteurs by Samantha Seiple

Related Words

• administration
• agency
• area
• board
• branch
• bureau
• commission
• division
• office
• staff
• station
• unit