variants:
or mamillary
Definition of mammillary
1
: of, relating to, or affecting a nipple, breast, or duct of the mammary gland
mammillary tissue a mammillary fistula
2a
: resembling a breast or nipple especially in having a rounded shape
the mammillary process of a lumbar vertebra
b
: studded with breast-shaped protuberances
mammillary forms of agate
3
: of or relating to a mammillary body
the mammillary region of the brain mammillary nuclei
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
The Exceptions Quiz III
-
- Which of these words does not mean "nonsense"?

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
Words at Play
Ask the Editors
Word Games
Share mammillary
Time Traveler for mammillary
The first known use of mammillary was in 1615
See more words from the same year