Trigonia

noun

Tri·​go·​nia

trīˈgōnēə

1

: a genus of pearly-shelled bivalve mollusks (suborder Arcacea) including many extinct forms which characterize the Mesozoic rocks and a few living forms which survive on the coast of Australia

2

[New Latin; from the often triangular shape of the fruit] : a genus (the type of the family Trigoniaceae) of chiefly climbing tropical American shrubs

Word History

Etymology

New Latin, from Latin trigonus triangular (from Greek trigōnos) + New Latin -ia; from the shells suggesting the form of a triangle

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

Rhymes for Trigonia

• aphonia
• chelonia
• cladonia
• colonia
• dysphonia
• dystonia
• harmonia
• koinonia
• oogonia
• polonia
• sinfonia
• zirconia