There are multiple definitions:

1. lumbar puncture(English)

   • CSF, EMLA
   • Diagnostics

2. linear prediction(English)

   • IF, SIFT, SVD, ILPR, LPCC, PLP
   • Statistics, Signal analysis
   • https://doi.org…OC.2021.3126493

3. lipopeptide(English)

   • Biochemistry

4. light perception(English)

   • NLP
   • Ophthalmology

5. linear perceptron(English)

   • FN, FP, SVM, TE, TP

6. lichen planus(English)

   • Dermatology

7. lamina propria(Latin)

   • contains in the gut an array of antigen presenting cells (APCs)
   • APC, GI, GAP
   • Gastroenterology
   • https://doi.org…1385-019-0240-7

8. lateral pharyngoplasty(English)

   • procedure advocated to increase the intraluminal space of the pharynx during sleep
   • AHI, MPG, OSA, PAP, SP, TA
   • Sleep medicine, Respiratory system, Therapeutic approaches
   • https://doi.org…147/NSS.S311702

9. likely pathogenic [variant](English)

   • refers to a causative gene
   • BOR, P/LP, CMR, DCM, EMB, ICD, LVEF, NT-proBNP, NTV, SID, TTN, TV, VF, VT
   • Genetics, ENT, Cardiology, Autoimmunity
   • https://doi.org…598-022-04885-w

10. lower paraspinal(English)

    • an anger-out style moderates effects of how attention is allocated during pain on responses to and recovery from a subsequent mental stressor
    • AIS, AOS, CLBP
    • Spine (or spinal cord), Pain
    • https://doi.org…b013e318199d97f

11. long process [coupler](English)

    • attachment of the FMT to the LPI with the LP coupler leads to generally good mechanical and functional coupling in temporal-bone preparations with a notable disadvantage between 1.8 and 6 kHz
    • FMT, LDV, LPI, METF
    • Audiology
    • https://doi.org…res.2017.06.006

12. lidocaine-prilocaine(English)

    • cream that provides perianal-intrarectal pain relief
    • LK, PPNB
    • Anesthesiology/analgesia
    • https://doi.org…0X.2011.10622.x

13. low protein [intake](English)

    • refers to modulation of protein fermentation and fecal water toxicity
    • HP, NP
    • Gastroenterology, Metabolism
    • https://doi.org…al.pone.0052387

14. leg press(English)

    • refers to jump test performance and sarcopenia status
    • ASM, BP, JM
    • Gerontology/Geriatrics, Physical therapy
    • https://doi.org…b013e3182a51b11

15. lymphomatoid papulosis(English)

    • is included among the primary cutaneous lymphomas, that is, non-Hodgkin’s lymphomas which do not present extracutaneous manifestations at the time of diagnosis
    • EORTC, PCL
    • Dermatology
    • https://doi.org…-9649.32.1.2326

16. Listing's plane(English)

    • SOP
    • Ophthalmology, Neuropathy
    • https://doi.org…67/iovs.06-1319

17. lispro(English)

    • as premeal insulin
    • DM, HbA1C, UL
    • Diabetes, Insulin, Guidelines
    • https://doi.org…iacare.24.4.625

18. laryngeal preservation(English)

    • is recommended for up to low-volume T4 laryngeal cancer as an evidence-based treatment option that does not compromise survival
    • ASCO, CRT, NCCN, OS, RT, SPC, TL, CCI, TNM, CDSS, TL/ND/RT
    • Oncology, Surgery
    • https://doi.org…2885-017-3608-7

19. low passage(English)

    • GSIS, HP, MIN6, T2DM
    • Diabetes, Insulin
    • https://doi.org…al.pone.0040868

20. lipoid proteinosis(English)

    • a rare autosomal recessive disease characterized by deposition of hyaline material in skin and mucosae. Epilepsy, as an extracutaneous manifestation associated with typical mesial temporal calcifications
    • ECM1, EEG
    • Genetics, Brain (dys)function, Epilepsy or syncope, Electrophysiology
    • https://doi.org…550059417705280

21. levator plate(English)

    • EAS, IVS, LMA, PCM, PRM, PS, PUL, RVF, TFS, USL
    • Gastroenterology, Gynecology, Anatomy
    • https://doi.org…-2339-5.50118-X