DEFINITION: Someone who identifies as "asexual" usually experiences little or no sexual attraction to any other person. That said, definitions about what constitutes "sexual attraction" vary widely, even among people who use the word "asexual" to describe themselves.
ASEXUALTY VS. CELIBACY: Asexuality is not the same thing as celibacy, abstinence or impotence. Celibacy is a choice made by people who experience sexual attraction to not act on that attraction. Abstinence is the decision to refrain from sexual activity for religious or philosophical reasons, such as "abstinence before marriage." Impotence is the inability for a male person to get or keep an erection.