Maxwell disk

noun

: one of two or more radially slit and concentric disks of different colors that may be overlapped by adjustable amounts to yield the average color when rotated rapidly

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