Mixolydian

This musical mouthful was chosen for the middle name of one of Nick Cannon's twin sons, Zion. It refers to the Mixolydian mode, a type of ancient Greek musical scale with distinctive harmonic and melodic characteristics. The literal meaning of the word is "half-Lydian," in reference to the Lydian mode.

As far as we know, Nick Cannon is the first person to use Mixolydian as a baby name. Our guess is that this one is going to be slated as a wacky celebrity baby name rather than catch on with the mainstream.

Pronounced mik-so-LID-ee-un.