NCI Dictionary of Cancer Terms

  • Resize font
  • Print
  • Email
  • Facebook
  • Twitter
  • Google+
  • Pinterest

The NCI Dictionary of Cancer Terms features 7,790 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

hair follicle
(… FAH-lih-kul)
A shaft or opening on the surface of the skin through which hair grows.

EnlargeSkin anatomy; drawing shows layers of the epidermis, dermis, and subcutaneous tissue including hair shafts and follicles, oil glands, lymph vessels, nerves, fatty tissue, veins, arteries, and a sweat gland.

Anatomy of the skin, showing the epidermis, dermis, and subcutaneous tissue.