adj: a beat or rhythm that is hypnotic to the point of making your head nod. Believed to be pioneered, but not created by, Pandora radio as an attribute of music, specifically in hip-hop, hip-hop instrumentals and trip-hop genres.
This beat is so headnodic that I was nodding the whole time without even realizing it.
by Mark Rodenhauser September 25, 2008
1 more definition
a quality of a musical beat which makes you unknowingly or uncontrolably nod your head to it.
"man that DJHERO daftpunk mix is headnodic,"
by PhatRhymeSayR January 03, 2009