A seta is a stiff hair, bristle, or bristle-like process or part of an organism.
In plants (i.e., botanical terminology), "seta" is synonymous with bristle—a stiff, strong hair. The term can also be applied to a modified hair-like structure, such as a pappus: a modified calyx in the Asteraceae.
Setae on their footpads are responsible for geckos' ability to cling to vertical surfaces.
Halonen is unique among all heads of state in that she has been the chairwoman of a national LGBT organisation, SETA (Finnish National organization for Sexual Equality).
SETA was founded in 1973, but its roots are in the 1960s when a great many young intellectuals and politicians like Tarja Halonen were members in various organisations that had radical sexual political agenda.
During Halonen's time in SETA, a group of activists arranged a spontaneous action during the 1981 gay lib days to challenge existing penal law, shouting "We encourage to homosexuality" and collecting a list of signatures which was given to the police.