Answer:
Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word in entered in the most trusted English dictionary.
Step-by-step explanation:
Definition - A lung disease caused by inhalation of very fine silicate or quartz dust.
The longest word in the English dictionary is "pneumonoultramicroscopicsilicovolcanoconiosis," which is a type of lung disease caused by inhaling very fine silica particles. It has 45 letters.
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