controlled delivery

https://doi.org/10.1351/goldbook.13886
Supply of a substance according to desired rate and amount over time.
Note: If only a delayed or prolonged release is obtained without matching a desired release profile, the expression sustained delivery is to be used.
Source:
PAC, 2012, 84, 377. (Terminology for biorelated polymers and applications (IUPAC Recommendations 2012)) on page 386 [Terms] [Paper]