To save this word, you'll need to log in.
ex·ine | \ ˈek-ˌsēn 
, -ˌsīn \
, -ˌsīn \Definition of exine
: the outer of the two major layers forming the walls of some spores and especially pollen grains
Keep scrolling for more
Comments on exine
What made you want to look up exine? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Semantic Drift Quiz
- Which of the following was once a synonym for fun?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share exine
Time Traveler for exine
The first known use of exine was in 1839
See more words from the same year