hemiprism

noun

hemi·​prism

: a prism consisting of only two parallel faces (as in the triclinic system) : a pinacoid cutting two crystallographic axes

Word History

Etymology

International Scientific Vocabulary hemi- entry 1 + prism

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