SINCE 1828
Alcyonaria
plural noun
Al·cy·o·nar·ia
| \ ˌal-sē-ə-ˈner-ē-ə\
Definition of Alcyonaria
: a subclass or order of Anthozoa including chiefly compound coelenterates having polyps with 8-branched tentacles and eight septa and comprising the Stolonifera, Alcyonacea, Gorgonacea, and Pennatulacea
Other Words from Alcyonaria
alcyonarian
\ ˌal-sē-ə-ˈner-ē-ən 
\
adjective or noun
\
adjective or noun
Keep scrolling for more
Comments on Alcyonaria
What made you want to look up Alcyonaria? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Words for Summer: A Quiz
-
- Which of the following words means “of or relating to summer”?
Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Words for Summer: A Quiz
Test your knowledge of words related to the season of longer days and vacations.
Take the quiz -
Finance Words Quiz
Take the quiz
-
True or False?
Test your knowledge - and maybe learn something along the way.
Take the quiz -
Syn City
Build a city of skyscrapers—one synonym at a time.
Play the game
Share Alcyonaria
Resources for Alcyonaria