We haven't had one of these in awhile...
(NOO-muh-noh-UL-truh-MY-kruh-SKOP-ik-SIL -i-koh-vol-KAY-no-KOH-nee-O-sis, nyoo-)
A lung disease caused by inhaling fine particles of silica.
Anchored Cubicle uses "pneumonoultramicroscopicsilicovolcanoconiosis" in a sentence:
I do not know anyone who has died from a bad, or minor, case of pneumonoultramicroscopicsilicovolcanoconiosis.