The purpose of this glossary is to provide definitions to key words throughout the site.

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Tiny grape-like clusters of cells responsible for producing milk. It forms a large portion of a woman's glandular tissue in her breasts.


Relates to the property of a substance or treatment prepared to reduce inflammation.


The dark colored, circular area of the breasts that surrounds the nipple. It covers the lactiferous duct where milk is ejected.


In psychology, attachment is defined as a deep and long-lasting emotional bond that one has with another. It is characterized by a range of behaviors in a child that correspond with how well he/she is bonded to another.



A yellowish form of milk, nutrient-rich in immune factors, and secreted by a pregnant woman's breasts a few days before and after the birth of a newborn. It is the newborn's first meal and is designed to protect it from a wide variety of viral and bacterial infections.

Cooper's ligaments

The ligaments in a woman's breasts that provide physical support to overall breast tissue, both fatty and glandular types. It attaches to the exterier walls and muscles of the breast to keep breast tissue in position.



It is both a hormone and neurotransmitter that assists in the transmission of signals from the brain to other vital areas of the body.



(also called “endogenous morphines”) are chemicals similar to morphine (an opioid) produced in the human brain that decrease pain sensation and trigger positive feelings in the body.


It is the painful filling of the breasts with milk caused by an imbalance between milk supply and efficient milk ejection.


A sex hormone produced by the female reproductive system. It works with progesterone, another sex hormone, to control ovulation during pregnancy.

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