Today's Word: Poliosis

Here's a word for all you Anderson Cooper fans out there:

Poliosis (pah-lee-OH-sis) means "grayness or whiteness of the hair, especially if it's premature." Poliosis comes from the Greek polios meaning "gray."

That same Greek root colors the English word polio, a shortened form of poliomyelitis, an inflammation of the spinal cord's "gray matter."