A play on the words "ping" and "pandemic". This is when a large number of people are notified ("pinged") by a contact-tracing app to self-isolate after they have come into contact with a person who has tested positive for COVID-19.
Short for “Pi Pandemic.” A frightening 2D or 3D mathematical meme or short clip released by some rogue mathematicians or math educators on the number π to terrorize millions of students and their parents, many of whom suffer from math anxiety to a certain degree.
The pidemic is a great awakening among members of the global mathematical community in the midst of the Covid-19 pandemic, as they’re clueless how to help an oft-math-anxious or semi-innumerate lay public to come to terms with these two evils.