
...because we were attending a SYMPOSIUM
on molecular positronium?
The Big Bang Theory Season 1, Episode 10

"Professor Jones told the
SYMPOSIUM he had a new method
The Big Bang Theory Season 5, Episode 16

You know, there's nothing I can do
about getting you invited to the SYMPOSIUM.
The Big Bang Theory Season 8, Episode 20

It's true. A select group of scientists
was invited to a weekend SYMPOSIUM...
The Big Bang Theory Season 8, Episode 20

I just wanted to come by and wish you
guys luck with your SYMPOSIUM.
The Big Bang Theory Season 1, Episode 10