An Etymological Dictionary of Astronomy and Astrophysics

1. To change (something) so that it fits, corresponds, or conforms; adapt; accommodate.
   

2. To put in good working order; regulate; bring to a proper state or position (Dictionary.com).

Etymology (EN): M.E. ajusten, “to correct, remedy; arrange, settle, compose,” from M.Fr. adjuster, O.Fr. ajouter “to join,” from L.L. adjuxtare “to bring near,” from L. → ad- “to” + juxta “next,” related to jungere “to join,” from PIE *yeug- “to join,” → conjugate, akin to E. → yoke.

Etymology (PE): Barjutidan, from prefix bar-, → on-,

• Kurd. Soriani jut, jot “pair, couple, twin,” Aftari jot “yoke,” classical Pers. yuq, → yoke.