Lol, sorry about the flame war.
The Bottom Line
I guess the bottom line is that Gene Roddenbury wasn't satisfied with the fact that lasers in real life don't kill or stun people, because they just cut things down. It wasn't meant to be taken as the final product.
Personally, I think the creators of licensed Star Trek works should in corporate lasers into Starfleet during AT LEAST around the Pike Era.
Phaser stands for
Phased Energy Rectification. [1] Somewhere along the way, the Phase weapons of the ENT/22nd Century era earned the "R" for
Rectification. I remember that someone posted, in another thread probably, that for phaser, they could have combined the
Phase and
LaseR =
Phaser.
[1]
http://www.acronymfinder.com/PHASER.html