Could the Muqatta'at be interpreted as a semitic root?

I know there are numerous opinions on the [Muqatta'at](http://en.wikipedia.org/wiki/Muqatta%27at) , and there is [another question](https://islam.stackexchange.com/questions/328/what-is-the-meaning-of-arabic-letters-in-the-begining-of-some-suras) already asked here on that topic. But there is a particular theory which occurred to me, and I wanted to know if there is any history of this theory in Islamic scholarship, and whether it makes any sense. The theory is that the Muqatta'at are actually roots (triliteral or otherwise), or else as words derived from those roots. Considering for example Sura 2:1 there is alif-lam-meem. Is that a valid triliteral root in Arabic? I know [in Hebrew it is a valid root](http://www.blueletterbible.org/lang/lexicon/lexicon.cfm?Strongs=H481) , with a root meaning of "bind", and derived meanings of "silenced", "mute", etc. Doesn't الم mean pain, trouble, distress, etc in Arabic? Could this theory be extended to the other disjointed letters? Does the theory make any sense?