interdepartmental

adjective

in·​ter·​de·​part·​men·​tal ˌin-tər-di-ˌpärt-ˈmen-tᵊl 

-ˌdē-

: existing, exchanged, or carried on between two or more departments (as of an organization) or their members

an interdepartmental committee

especially : characterized by participation or cooperation of two or more departments of an educational institution

an interdepartmental course of study

interdepartmentally

ˌin-tər-di-ˌpärt-ˈmen-tə-lē 

-ˌdē-

adverb

or less commonly inter-departmentally

working interdepartmentally

Examples of interdepartmental in a Sentence

Recent Examples on the Web

The Joint Army Navy Intelligence Studies was born and was the country's first interdepartmental basic intelligence program. —CBS News, 6 Apr. 2026

The Joint Army Navy Intelligence Studies was born, the country’s first interdepartmental basic intelligence program. —Laurie Kellman, Los Angeles Times, 6 Apr. 2026

The Joint Army Navy Intelligence Studies was born, the country's first interdepartmental basic intelligence program. —ABC News, 5 Apr. 2026

The grand jury also found the county missed enforcement opportunities due to poor interdepartmental communication, misunderstandings of permitting requirements and a longstanding practice of deprioritizing code enforcement. —Joe Rubin, Sacbee.com, 26 Mar. 2026

Word History

First Known Use

1855, in the meaning defined above

Rhymes for interdepartmental

• intercontinental
• intergovernmental
• intragovernmental
• nonexperimental
• accidental
• compartmental
• continental
• detrimental
• elemental
• fundamental
• governmental
• incidental