Top Definition
1. Loudspeaker enclosure principle
2. Someone that not brings a party on. You have to insert the party into a Passive Radiator to make the party come out of him/her.
Let's ask Aileen to join the party.
-Oh no man, she's such a boring passive radiator.
by Rimshooter November 04, 2008
5 Words related to Passive Radiator

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