-To amplify sound volume
-To augment the size of something.
Alan: "Volumize the tv dude, i can barely hear the screams of the palace guards."
William: "Bitch, do it yourself!"
1) To up the volume.
2) To increase the sound.
3) To louden.
A song comes on the radio that you want to hear.
"Ooh, I LOVE this song! Volumize it!"