Allosexual is a term used to refer to someone who does not identify as part of the asexual sprectrum (asexual, grey-a, demi-sexual). It is an umbrella term for all people who experience both primary and secondary sexual attraction on a regular basis.
Allosexual is a term that is primarily used in the asexual community to distinguish people who are asexual. The purpose of the term is to make the distinction without calling those people "sexual" (because all people are sexual, just in different ways) or "normal" (because that is uncessarily disenfranchising to people who identify asexual).
