Title: secretion
Long Title: IUPAC Gold Book - secretion
DOI: 10.1351/goldbook.16079
Status: current

Definition
Process by which a substance such as a hormone or enzyme produced in a cell is passed through a plasma membrane to the outside, for example, the intestinal lumen or the blood (internal secretion).

Solid, liquid, or gaseous material passed from the inside of a cell through a plasma membrane to the outside as a result of cell activity.

Source
- PAC, 2007, 79, 1153. 'Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)' on page 1307 (https://doi.org/10.1351/pac200779071153)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/16079/html
- json: https://goldbook.iupac.org/terms/view/16079/json
- xml: https://goldbook.iupac.org/terms/view/16079/xml

Citation: Citation: 'secretion' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.16079
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Accessed: 2026-04-17T23:04:53+00:00