Definition of nonfunctioning
1
: not performing or able to perform a function : not functioning : nonfunctional
a nonfunctioning telephone a nonfunctioning kidney
2
medical, of a tumor
: not secreting hormones or not secreting hormones that produce clinical symptoms
a nonfunctioning pituitary adenoma nonfunctioning islet cell tumors
Test Your Vocabulary
Commonly Confused Words Quiz
-
- I went to the ______ store to buy a birthday card.

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share nonfunctioning
Time Traveler for nonfunctioning
The first known use of nonfunctioning was in 1869
See more words from the same year