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Dextromethorphan is a salt of the methyl ether dextrorotatory isomer of levorphanol, a narcotic (opioid) analgesic (and DXM itself is an isomer, i.e., a mirror image in the 3D space, of levomethorphan, a substance considered an opioid1). It is chemically named as 3-methoxy-17-methyl-9(alpha), 13(alpha), 14(alpha)-morphinan hydrobromide monohydrate. DXM occurs as white crystals, is sparingly soluble in water, and freely soluble in alcohol. The drug is dextrorotatory in water (at 20 degrees Celsius, Sodium D-line) with a specific rotation of +27.6 degrees.

Dextromethorphan is a codine replacement.
Dextromethorphan can be both the most badass, and most scary drug one could use...NEVER underestimate it!

by A_Crowley June 14, 2006
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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2
Disassociative anesthetic used as cough supressant in cough syrup. Frequently abused for the god-damn cool trip it gives you.
Dude, I can't feel my legs. I think im floating. Look at that green submarine floating through the window. God I love dextromethorphan.
by FinGerLiverFliPpeRNippLeFunGus February 06, 2003
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3
Active ingredient in cough syrups. When taken in large amounts it has the ability to really make you trip balls.
You're guitar is melting!
by iwannabeanalcoholic March 05, 2005
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