aden-

DEFINITION of aden-

gland; The combining form aden- refers to glands or glandular tissue, including endocrine and exocrine glands. It appears frequently in pathology, oncology, and diagnostic terminology.

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ETYMOLOGY of aden-

greek

Component	Origin	Meaning
aden- / adeno-	Greek ἀδήν (adēn)	“gland,” “glandular tissue,” “lymph node” — anatomical combining form denoting glandular structures

The word entered English in the 1720s as adenitis (noun), borrowed from Modern Latin adenitis, from Greek ἀδήν (adēn) — literally “gland.” The noun adenoma appeared in the 1830s, and adenocarcinoma in the 1890s. The root adēn (“gland”) connects aden- to the entire gland and organ roots: adenoma (aden- + -oma $\to$ benign glandular tumor), adenocarcinoma (aden- + carcino- + -oma $\to$ malignant glandular tumor), and adenopathy (aden- + -pathy $\to$ disease of a gland/lymph node). The combining form aden- is highly productive in oncology, endocrinology, and pathology: e.g., adenitis, adenoidectomy, adenosine, and adenohypophysis.

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RELATED TERMS to aden-

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DERIVATIONS of aden-

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SORT file.name ASC

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Query

TABLE definition AS Definition
FROM #medroot
WHERE length(filter(definition, (word) => econtains([[]].definition, word))) > 0 AND file.name != [[]].file.name

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Combining Form: aden-

Short Definition

Relating to a gland.

Long Definition

The combining form aden- refers to glands or glandular tissue, including endocrine and exocrine glands. It appears frequently in pathology, oncology, and diagnostic terminology.

Etymology

• Greek adēn → “gland”

Related Terms

Term	Meaning
adenoid	resembling a gland
adenoma	glandular tumor

Common Medical Terms

• Adenitis - inflammation of a gland
• Adenoma - benign glandular tumor
• Adenocarcinoma - malignant glandular tumor

Documentation Clues

• “Mass in gland”
• “Swollen lymph node”
• “Glandular tissue involved”

Coder’s Notes

Critical in oncology coding; adenocarcinomas have site‑specific ICD‑10 rules.

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Med terms dictionary Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms