controlled release of substances by cells or tissues

Secretion is the process of releasing chemicals from a cell, or from a gland.

English Wiktionary
English Wiktionary
The English Wiktionary has a dictionary definition (meanings of a word) for: secretion

Eukaryotic cells have a highly evolved process of secretion.

Bibliography change

  • The Molecular Biology of the Cell 4th edition - Alberts et al.
  • The Physiology and Biochemistry of Prokaryotic 2nd edition – David White
  • Article by Kiera moser