[EREFUNDO]

My theory is as long as it contains meaning then that would be considered a "word", the number of syllables is irrelevant. I could arguably say that a word is an "irreducible unit of information" in the human language. For inflectional languages we can reduce the word by taking out prefixes ans suffixes and the root word will still have meaning. But the meaning changes as well so in essence it becomes a completely different word albeit somewhat related.