Synonyms of 'secretion'
When there is a discharge of a substance, the substance comes out from inside somewhere.
They develop a fever and a watery discharge from the eyes.
An emission of something such as gas or radiation is the release of it into the atmosphere.
the emission of gases such as carbon dioxide
Thesaurus for secretion from the Collins English Thesaurus
Secretion is the process by which certain liquid substances are produced by parts of plants or from the bodies of people or animals.