NCIt definition : Powdered medication inhaled as a measured dose.;
Alternative definition : EDQM-HC: Solid, usually multidose preparation intended for inhalation use, consisting
of one or more powders of solid active substance(s) to be administered by a dry-powder
inhaler containing a metering dose mechanism within the inhaler. 'Inhalation powder,
hard capsule' and 'Inhalation powder, pre-dispensed' are excluded.;