mer30 Share definition Flag Persian chatspeak for "merci," which means "thank you." The number 30 in Persian is pronounced "si", so mer30 would read "merci." Adib: Eide shoma mobarak Behrad jan! Behrad: Mer30 Adib jan va shoma hamintor! mer30 by AdibM March 19, 2009 0 0 Get merch Get the mer30 mug. Buy Now — $32.95 See more merch