Definition of propagation
: the act or action of propagating: such as
a
: increase (as of a kind of organism) in numbers
b
: the spreading of something (such as a belief) abroad or into new regions
c
: enlargement or extension (as of a crack) in a solid body
Test Your Vocabulary
Challenging Words You Should Know
-
- Often used to describe “the march of time,” what does inexorable mean?

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share propagation
Time Traveler for propagation
The first known use of propagation was in the 15th century
See more words from the same century