(botany) A seedling produced by self-pollination (plural selfs).
(immunology) Any molecule, cell, or tissue of an organism's own (belonging to the self), as opposed to a foreign (nonself) molecule, cell, or tissue (for example, infective, allogenic, or xenogenic).
(botany) To fertilise by the same strain; to inbreed.
Adjective
Having its own or a single nature or character, as in colour, composition, etc., without addition or change; unmixed.
(immunology) Of or relating to any molecule, cell, or tissue of an organism's own (belonging to the self), as opposed to a foreign (nonself) molecule, cell, or tissue (for example, infective, allogenic, or xenogenic).