Definition of flagellum
: any of various elongated filiform appendages of plants or animals: such as
a
: the slender distal part of an antenna
b
: a long tapering process that projects singly or in groups from a cell and is the primary organ of motion of many microorganisms
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

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 flagellum
Time Traveler for flagellum
The first known use of flagellum was in 1852
See more words from the same year