#instillation__instillment__instilment  the introduction of a liquid (by pouring or injection) drop by drop
  supertype:  #insertion__introduction__intromission  the act of putting one thing into another
  subtype:  #infusion.instillation  (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)

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