There are multiple definitions:

1. University College London(English)

   • Hospital

2. uncomfortable loudness level(English)

   • Audiology

3. upper control limit(English)

   • LCL
   • Statistics

4. ulnar collateral ligament(English)

   • may refer to irreducible elbow dislocation
   • Orthopedics, Injury
   • http://pubmed.n…ih.gov/7562158/

5. unilateral cleft lip(English)

   • BCL, CL, CLP, CP, FDR, NS, OO, OOM
   • Mouth, esophagus and stomach, Pathology, Genetics
   • https://doi.org…oms.2016.03.027