Is there a 14 letter word using the following letters: A, I, I, I, O,
U, C, L, L, M, N, P, T, & T?

Hello jamm,

The answer is "multiplication"!

How did I find this?

After a few false starts, I searched on Google for "14 letter words". 
On a page called "Scrabble words", I found the following list:

14 letter words
Scrabble words
http://vortex.bd.psu.edu/~sas45/scrabble/14letteralphas.htm

I then searched on that page for "aciiillmnopttu", and came up with an
entry for "multiplication".

- justaskscott

Thanks for the help, I looked at that and was really perplexed!  After
you gave the answer, it was like ~~ oh, of course!