A clustering reaction in a homogeneous, supersaturated solution (solid or liquid)
which is unstable
against infinitesimal fluctuations in density or composition. The solution therefore
separates spontaneously into two phases, starting with small fluctuations and proceeding
with a decrease in the Gibbs energy without a nucleation barrier.
PAC, 1994, 66, 577
(Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations
on page 591
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook