Its just a made up word. I consider myself a musician - started off with the word legato, then to make a cool word (this is what I do) you can take any vowel in the word, and change it to any other vowel and it will sound cool. So I made legato into legati. Then I just added a random om in front to make it completely random, and so you would never guess that I had derived that word from the music term "legato."