- The process of steeping a substance in water, either cold or hot (below the boiling point), to extract its soluble principles.
- A medicinal preparation obtained by steeping the crude drug in water.
- The introduction of fluid other than blood, saline solution, into a vein.
[L. infusio, fr. in-fundo, pp. -fusus, to pour in]
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Examples: glitazone, GI cocktail, etc.