Definition of septum
: a dividing wall or membrane especially between bodily spaces or masses of soft tissue — compare dissepiment
Test Your Vocabulary
Eponyms: Words Named After People
-
- What is the best definition of boycott?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share septum
Time Traveler for septum
The first known use of septum was in 1578
See more words from the same year