Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

Lessonia

noun
Les·​so·​nia | \ leˈsōnēə\

Definition of Lessonia

: a genus (the type of the family Lessoniaceae) of large brown algae (order Laminariales) that resemble full-grown palm trees and occur chiefly in offshore waters of the southern Pacific

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 Lessonia

New Latin, from R. P. Lesson †1849 French naval pharmacist + New Latin -ia

Keep scrolling for more

Learn More about Lessonia

Statistics for Lessonia

Look-up Popularity

Comments on Lessonia

What made you want to look up Lessonia? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

propitious

Listen to the pronounciation of propitious

likely to have or produce good results

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things 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!

Words at Play
Ask the Editors
Word Games