combined operation

noun

1

: a military operation in which several allies coordinate their armed forces to accomplish a single mission, effect a defense, or gain some other goal

2

British : an often amphibious operation requiring the coordinated efforts of two or more services

—often used in plural

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now