frustoconical

adjective

frus·​to·​conical

¦frə(ˌ)stō+

: of the shape of a frustum of a cone

Word History

Etymology

frustum + -o- + conical

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