blue ice

noun

1

: clean compact ice formed in glaciers by recrystallization of snow, often in bands presumably along shear zones

2

: coarsely crystallized ice on the surface of some seas and lakes compare black ice, white ice

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