Angiopteris

noun

An·​gi·​op·​ter·​is

ˌanjēˈäptərə̇s

: a genus of tree ferns (family Marattiaceae) having sporangia closely arranged in two rows forming linear sori surrounded by a false indusium of fringed scales

Word History

Etymology

New Latin, from angi- + -pteris

First Known Use

1805, in the meaning defined above

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!