What are the best answers for “the introduction of a liquid (by pouring or injection) drop by drop”?

instillation, instillment, instilment.

How many letters does the top answer for “the introduction of a liquid (by pouring or injection) drop by drop” have?

The most common answer is instillation (12 letters).

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

instillation 12 letters wn-def

the introduction of a liquid (by pouring or injection) drop by drop

instillment 11 letters wn-def

the introduction of a liquid (by pouring or injection) drop by drop

instilment 10 letters wn-def

the introduction of a liquid (by pouring or injection) drop by drop