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1.
An expression of dismay to a speaker when said speaker assumes that the listener has equal knowledge of an issue--when in reality the item is news to the listener.
Speaker## "Yeah, and the problem is that even though we made it here, I don't have any money!!"

Listener## " You have no money?? How was I supposed to know that, osmose?"
by keynotespeaker May 25, 2010
 
2.
to go through the physical process of osmosis.
We waited patiently for our science project to osmose.
by Eusebio Martinez October 23, 2005