Abbreviation for "Outta Sight, Outta Mind". Indicating that interest in someone or something disappears when that person/thing is not present.
What's up with him? Yesterday he was so into me. Today it's OSOM.
by 5th dentist June 11, 2009
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An acronym that means Out of site out of mind. When you hide away from your boss at work to get out of doing more work than you have to.
Aye man you osom right now the boss is looking for you.
by Jaybwallen October 02, 2019
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