Coenopteridales

plural noun

Coe·​nop·​ter·​i·​da·​les

ˌsē(ˌ)näpˌterəˈdā(ˌ)lēz,

ˌse-

: an order of extinct Devonian and Carboniferous ferns that is usually considered as part of or coextensive with the subclass Primofilices and that has both simple and pinnate leaves with the latter having pinnae at an angle to the plane of the leaf blade

Word History

Etymology

New Latin, from coen- + Greek pterid-, pteris fern + New Latin -ales

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 Coenopteridales

• internationales
• salles