Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

triaster

noun
tri·as·ter | \trīˈastə(r)\
plural -s

Definition of triaster 

: a mitotic figure resulting from tripolar usually abnormal division of a nucleus

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 triaster

International Scientific Vocabulary tri- + -aster

Keep scrolling for more

Learn More about triaster

Dictionary Entries near triaster

Trias

Triassic

Triassochelys

triaster

triathlete

triathlon

triatic stay

Statistics for triaster

Look-up Popularity

Comments on triaster

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

Show Comments  Hide Comments 

WORD OF THE DAY

superjacent

lying above or upon

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

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