Psilotum

noun
Psi·​lo·​tum | \ sīˈlōtəm \

Definition of Psilotum

: a genus (the type of the family Psilotaceae) of chiefly tropical fern allies with terrestrial or epiphytic habit, slender branching stems, and sessile 3-celled sporangia usually in spikes

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!

History and Etymology for Psilotum

New Latin, probably from Late Greek psilōton, a plant, perhaps from Greek psilon down, soft feather, alteration of ptilon; akin to Greek pteron wing, feather

Keep scrolling for more

Learn More About Psilotum

Dictionary Entries Near Psilotum

psilotic

Psilotum

psi particle

See More Nearby Entries 

Statistics for Psilotum

Cite this Entry

“Psilotum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Psilotum. Accessed 20 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!