NCIt definition : A suspension intended for injection and is sonicated while a gas is bubbled through
the suspension resulting in the creation of microspheres by the solid particles.;
Alternative definition : CDISC: A liquid preparation, suitable for injection, which consists of solid particles
dispersed throughout a liquid phase in which the particles are not soluble. In addition,
the product is sonicated while a gas is bubbled through the suspension, and this results
in the formation of microspheres by the solid particles. (NCI);