There are multiple definitions:

1. external sinus lift(English)

   • sinus lift with lateral wall approach and crestal approach are reliable methods for implant insertion in the posterior maxilla
   • ISL
   • Dentistry, Surgery
   • https://doi.org…b013e3182386d34

2. end-systolic length(English)

   • Physiology, Cardiology

3. eslicarbazepine acetate(English)

   • as an initial or early monotherapy treatment of adult patients with focal epilepsy
   • Epilepsy or syncope, Therapeutic approaches
   • https://doi.org…54.2021.1925667