half-wave plate

noun

: a crystal plate that reduces by ¹/₂ cycle the phase difference between the two components of polarized light traversing it compare quarter-wave plate

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