Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

ectostosis

noun
ect·os·to·sis | \ ¦ekˌt+ \
plural ectostoses

Definition of ectostosis 

: bone formation beginning immediately beneath the perichondrium and surrounding or replacing the underlying cartilage — compare endostosis

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 ectostosis

New Latin, from ect- + -ostosis

Keep scrolling for more

Learn More about ectostosis

Share ectostosis

Resources for ectostosis

Cite Time Traveler Time Traveler! Explore the year a word first appeared

Dictionary Entries near ectostosis

ectosome

ectosphenotic

ectosphere

ectostosis

ectosymbiont

ectotherm

ectotrophic

Statistics for ectostosis

Look-up Popularity

Comments on ectostosis

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

Show Comments  Hide Comments 

WORD OF THE DAY

biannual

occurring twice a year or every two years

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

  • alt-573b465788319
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Add Diction

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