hypsiloid

adjective

hyp·​si·​loid

ˈhipsəˌlȯid

anatomy

: resembling a Greek capital letter upsilon in form

Word History

Etymology

Middle Greek hypsiloeidēs, from hy psilon upsilon, literally, simple y + -oeidēs -oid

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