There are multiple definitions:

1. unilateral & bilateral [stimulation](English)

   • refers to dissociation between anterograde and retrograde amnesia after treatment with electroconvulsive therapy
   • ECT, UL
   • Depression, Memory, Psychiatry
   • https://doi.org…b013e318158792f

2. unbound(English)

   • CJ, CM, DLD, ICS, TAP, UB
   • Cell biology, Mitochondrion
   • https://doi.org…3/jcb.200811099

3. uniblocker(English)

   • refers to a bronchial blocker
   • DLT, EZB, LCS
   • Pulmonology
   • https://doi.org…vca.2023.08.125