aculeiform

adjective

acu·​le·​i·​form

ə-ˈkyü-lē-ə-ˌfȯrm,

¦a-kyə-¦lē-

: like a prickle in shape

specifically : resembling an aculeus

Word History

Etymology

International Scientific Vocabulary acule- (from Latin aculeus prickle, sting) + -iform

First Known Use

1809, in the meaning defined above

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