nucleating agent

https://doi.org/10.1351/goldbook.N04242
A material either added to or present in a system, which induces either homogeneous or heterogeneous @N04243@.
Source:
PAC, 1972, 31, 577. (Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry) on page 608 [Terms] [Paper]