An event or place (such as an anime convention) where large numbers of nerds join forces and celebrate such common interests in style. May or may not include cosplay, music, and celebrity guest appearances. This also may apply to atypical "nerdy" activities, such as painting, knitting, or poetry.
"Are you going to Comic-con this year?" "Yeah, I heard it's gonna be the biggest nerdstravaganza ever!"
by loop zoop July 2, 2013