Instillation

in·still also in·stil  (n-stl)

tr.v. in·stilled, in·still·ing, in·stills also in·stils

1. To introduce by gradual, persistent efforts; implant: "Morality . . . may be instilled into their minds" (Thomas Jefferson).

2. To pour in (medicine, for example) drop by drop.

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[Middle English instillen, from Latin nstllre : in-, into; see in-² + stllre, to drip, drop (from stlla, drop).]

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instil·lation (nst-lshn) n.

in·stiller n.

in·stillment n.

Thesaurus

Noun	1.	instillation - the introduction of a liquid (by pouring or injection) drop by drop instillment, instilment intromission, insertion, introduction - the act of putting one thing into another infusion - (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)
	2.	instillation - a liquid that is instilled drop by drop liquid - fluid matter having no fixed shape but a fixed volume