Asexual

From -("lacking, without") + sexual.

Full definition of asexual

2010, Jerrold S. Greenberg, Clint E. Bruess, Sarah C. Conklin, Exploring the Dimensions of Human Sexuality, fourth edition, pages 357–358:Many asexual people experience attraction, but feel no need to act out that attraction sexually. Because they don't see a lack of sexual arousal as a problem to be corrected, asexual people focus their energy on enjoying other types of arousal and pleasure.

2004, Martha Vicinus, Intimate Friends: women who loved women, 1778-1928, page 150:The central paradox of Linton's writing was her inability, or unwillingness, to imagine an asexual friendship between women.

(biology) Having no distinct sex, having no sexual organs.
(biology) Without sexual action; reproducing by some other method than sex.asexual reproduction

(plural asexuals)

(biology) A species which reproduces by asexual rather than sexual reproduction, or a member of such a species.

2009, Isa SchÃ¶n, Giampaolo Rossetti, Koen Martens, Darwinulid Ostracods: Ancient Asexual Scandals or Scandalous Gossip?, published as Chapter 11 of Lost Sex: The Evolutionary Biology of Parthenogenesis, Isa SchÃ¶n, Koen Martens, Peter van Dijk (editors), page 221:11.2 Demonstrating the Status of Long-Lived Asexuals... Indeed, if sex has so many advantages, then which special adaptations - if any - allow long-term survival without it? However, the main task of the research teams dealing with such putative ancient asexuals has thus far been to demonstrate that their respective groups (mainly bdelloids, darwinulids and certain lineages within orbatid mites) indeed merit the status.

A person who does not experience sexual attraction; a person who lacks interest in or desire for sex.