As far as I can tell their seems to be two definitions for asexual (as it applies to human beings).
1 Not being attracted to anyone.
This follows the logic of if heterosexual is attracted to not like, homosexual is attracted to like, pansexual is attracted to all, than asexual is attracted to none.
2 Not being interested in sexual activity.
As in if someone is sexual than they are interested in sexual activity so asexual would be not interested in sexual activity.
I bring this up Because I find I just do not care about sex but I do have a preference. So by definition 1 I would not be asexual but by definition 2 I would.
1 Not being attracted to anyone.
This follows the logic of if heterosexual is attracted to not like, homosexual is attracted to like, pansexual is attracted to all, than asexual is attracted to none.
2 Not being interested in sexual activity.
As in if someone is sexual than they are interested in sexual activity so asexual would be not interested in sexual activity.
I bring this up Because I find I just do not care about sex but I do have a preference. So by definition 1 I would not be asexual but by definition 2 I would.