plateholder

noun

1

: one that holds plates

especially : one that places plates for molds

2

: a flat lighttight container in which a light-sensitive photographic plate may be held in a camera and may be exposed by removal of a slide

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