1 definition by Brett W.
The type of large, non-flat, see-through plastic lid used to cover Slurpees and various iced coffee drinks that allows for wide spill-over of whipped cream and other edible, non-liquid material.
"Wow, they're putting a lot of whipped cream on that iced mochachino...you're gonna need a biodome for that!"
"Oh no! My straw's too short for the biodome...I'm losin' it!"
"Oh no! My straw's too short for the biodome...I'm losin' it!"
by Brett W. July 19, 2005