Definition of giardia
: any of a genus (Giardia) of flagellate protozoans inhabiting the intestines of various mammals and including one (G. lamblia synonym G. intestinalis) that is associated with diarrhea in humans
Test Your Vocabulary
Commonly Confused Words Quiz
-
- I went to the ______ store to buy a birthday card.

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 giardia
Time Traveler for giardia
The first known use of giardia was in 1918
See more words from the same year