wormy halibut

noun

: Pacific halibut infected with a myxosporidian protozoan (Unicapsula muscularis) that invades the muscle fibers and forms long swollen cysts which make the flesh unsuitable for table use

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