Pigeon breast
Having a prominent breastbone and chest. Also known as pectus carinatum.
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- Pigment
A substance that gives color to tissue. Pigments are responsible for the colors of skin, eyes, and hair.
- Pigmentation
The coloring of the skin, hair, mucous membranes, and retina of the eye. Pigmentation is due to the deposition of the pigment melanin, which is produced by specialized cells called melanocytes. Other pigment-related terms include hyperpigmentation (too much pigment), hypopigmentation and underpigmentation (too little pigment), and depigmentation (loss of pigment).
- Pigmented villonodular synovitis
A benign proliferative form of monoarthritis (arthritis in just one joint) that can occurs at any age but is most common in adults age 20-50. The joint most often affected is the knee with the hip, ankle, and shoulder affected less commonly. Pigmented villonodular synovitis is pigmented by hemosiderin deposited in the synovium (the joint […]
- Piles
1. A term in use since the 15th century for hemorrhoids. 2. An uncommon street name for crack cocaine.
- Pill
In pharmacy, a medicinal substance in a small round or oval mass meant to be swallowed. Pills often contain a filler and a plastic substance such as lactose that permits the pill to be rolled by hand or machine into the desired form. The pill may then be coated with a varnishlike substance. The word […]