Yes, glia is a Scrabble word!
...and is worth 5 points in Scrabble, and 7 points in Words with Friends
glia
Noun
1. Sustentacular tissue that surrounds and supports neurons in the central nervous system; glial and neural cells together compose the tissue of the central nervous system
What Scrabble words can I make with the letters in glia?
3 Letter Words
2 Letter Words