infectious sinusitis

noun

: a virus disease of turkeys marked by inflammation of the lining of the infraorbital sinuses resulting in great distention of the sinuses and by exudate that interferes with vision and indirectly with nutrition

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