There are multiple definitions:

1. lactated Ringer’s(English)

   • combination of sodium chloride, sodium lactate, potassium chloride, and calcium chloride in water; aka sodium lactate solution or Hartmann's solution
   • Physiology

2. logistic regression(English)

   • MLR
   • Statistics

3. Luo-Rudy [model](English)

   • TNNP
   • Electrophysiology, Model(ing), Cardiology

4. late relapse [in ALL](English)

   • often defined as relapse occurring 5–9 years after the initial ALL diagnosis
   • ALL, CR, NGS, VLR
   • Prognosis, Leukemia
   • https://doi.org…408-021-00516-1

5. liver resection(English)

   • see also HR
   • AFP, EHBH, HCC, HH, LT, MPV, PVTT, HR
   • Liver disease, Oncology, Surgery
   • https://doi.org…mj.2021.62.1.29

6. likelihood ratio(English)

   • LRNT-MoM
   • Statistics, Ratio-based metric
   • https://doi.org/10.1002/uog.7677

7. loading rate(English)

   • FFS, ILR, LR, RFS
   • Musculoskeletal system, Biophysics
   • https://doi.org…000000000000234

8. Lindegaard ratio(English)

   • calculated as MFVMCA /MFVEICA. An LR of 3-6 is a sign of mild to moderate vasospasm, and an LR > 6.0 is an indication of severe vasospasm. An LR < 3.0 is suggestive of hyperemia or other physiological conditions, although blood flow velocity is increased
   • ACA, BA, CBF, CPP, CVR, DCI, eCVR, ICA, ICP, MAP, MCA, MFV, PCA, PFO, SAH, TCD, TEE, VA, VMR
   • Doppler technique, Brain (dys)function, Hemodynamics, Cerebrovascular event, Ratio-based metric
   • https://doi.org…19.9.FOCUS19611
   • https://doi.org…/jnn.2022.00115

9. local restoration(English)

   • GC, GCLR, GFB, ML, SSRL, TEM
   • Kidney and adrenals, Artificial intelligence, Microscopy
   • https://doi.org…med.2023.102720

10. low-risk(English)

    • may refer to a virus
    • HPV, HR, DCM
    • Virology, Gynecology, Risk factor
    • https://doi.org…6532(09)70013-7

11. Lycium ruthenicum(Latin)

    • EIF, IL-6, IL-1β, IL-2, LDH, miRNA, SOD, TNF-α, TP
    • Nutrition, Fatigue, Exercise & Training
    • https://doi.org…lb.2023.1223411