—v.t. 1. to introduce, as if by pouring; cause to penetrate; instill (usually fol. by into): The energetic new principal infused new life into the school. 2. to imbue or inspire (usually fol. by with): The new coach infused the team with enthusiasm. 3. to steep or soak (leaves, bark, roots, etc.) in a liquid so as to extract the soluble properties or ingredients.
4. Obs.to pour in.
—v.i. to undergo infusion; become infused: Leave the solution to infuse overnight.