  In this paper, we propose a statistical test to determine whether a given
word is used as a polysemic word or not. The statistic of the word in this test
roughly corresponds to the fluctuation in the senses of the neighboring words a
nd the word itself. Even though the sense of a word corresponds to a single
vector, we discuss how polysemy of the words affects the position of vectors.
Finally, we also explain the method to detect this effect.
