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Medical Term:


Pronunciation: lō′shŭn

Definition: A class of pharmacopeial preparations that are liquid suspensions or dispersions intended for external application; some consist of finely powdered, insoluble solids held in more or less permanent suspension by suspending agents or surface-active agents, or both; others are oil-in-water emulsions stabilized by surface-active agents.

[L. lotio, a washing, fr. lavo, to wash]