Polysexual is a term that refers to a sexual attraction to a sexual identity or identities that fall on a spectrum. Polysexual individuals are not necessarily polyamourous or pansexual.
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Polysexuality acknowledges the possibility of all and every gender. Generally, the term is used by those that fall outside of the gender or sexuality norm. The terms heterosexual and homosexual make up a sexual binary. Bisexuality becomes a middle ground between the two. Polysexuality encourages the inclusion of individuals that are transgendered or intersex.
Polysexuality differs from pansexuality because pansexuality relies on the homosexual/heterosexual binary.