'Instillation' definitions:
Definition of 'instillation'
(from WordNet)
noun
The introduction of a liquid (by pouring or injection) drop by drop [syn: instillation, instillment, instilment]
noun
A liquid that is instilled drop by drop
Definition of 'Instillation'
From: GCIDE
- Instillation \In`stil*la"tion\, n. [L. instillatio: cf. F. instillation.] The act of instilling; also, that which is instilled. --Johnson. [1913 Webster]