Top Definition
When your school, workplace, or home has mold in it and it is making people sick. After so many people are sick, people may start to panic and declare it a moldapocalypse.
"OMG, Alex there was a moldapocalypse at school today, so school will be closed Wednesday and Thruday; it wil also be closed on Friday because they are still waiting for the final test results."
by theblackmesa February 08, 2013

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