![](https://webarchive.library.unt.edu/eot2008/20081031063844im_/http://www.nci.nih.gov/images/spacer.gif) |
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(A-deh-NOH-muh)
![](https://webarchive.library.unt.edu/eot2008/20081031063844im_/http://www.nci.nih.gov/images/spacer.gif)
| A noncancerous tumor that starts in gland-like cells of the epithelial tissue (thin layer of tissue that covers organs, glands, and other structures within the body). |
Previous Definitions: | AD 32, Adderall, addiction, adenocarcinoma, adenoid cystic carcinoma | Next Definitions: | adenopathy, adenosine triphosphate, adenosquamous carcinoma, adenovirus, ADI-PEG 20 |
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