1. a substance produced and released by a cell, gland, or organ in the body
Usage: biology
2. the process of producing and releasing such a substance
Usage: biology
3. the act of hiding something or keeping it secret
Usage: formal

Examples

• The pancreas produces insulin through secretion.
• Saliva is a secretion that helps digest food.
• The secretion of hormones regulates many body functions.
• Excessive secretion of stomach acid can cause ulcers.
• The secretion of the documents prevented the investigation.
• Oil secretion from the skin can cause acne.
• The secretion of evidence was considered obstruction of justice.