Greyasexual or greysexual (also spelled as grayasexual) is a sexual orientation on the sexual spectrum. Greyasexuals may experience sexual attraction but very infrequently. Another definition of greyasexual is someone who feels sexual attraction but does not desire a sexual relationship.
Greyasexual can be an orientation on its own or be combined with other sexual orientations. For example, one could be greysexual and gay, meaning that when one does experience romantic attraction it's only towards people of the same gender.