There are multiple definitions:

1. power spectrum density(English)

   • Signal analysis

2. post-synaptic density(English)

   • a protein; ZO-1; PSD-95=DLG4
   • MAGUK, PDZ
   • Synapse

3. pattern standard deviation(English)

   • CPSD, CLV, STF, PTS, SFA, SFR, SITA, VFI, BCVA, IRD, mOCT, VF
   • Ophthalmology
   • https://doi.org…200012000-00010
   • https://doi.org…55/2022/5675793
   • https://doi.org…59/cureus.28213

4. prevention of significant deterioration(English)

   • EPA
   • Preventive medicine

5. post-stenotic dilation(English)

   • Vascular disease, Hemodynamics

6. pure self-directed(English)

   • refers to a cognitive-behavioral program for disordered gambling
   • GSD
   • Addiction and health, Behavior(al science), Cognitive function, Therapeutic approaches
   • https://doi.org…pen-2016-014226

7. pubic symphysis diastasis(English)

   • hinders the connection between bilateral ischia and pubic bones, resulting in instability of the anterior pelvic ring
   • Skeleton and bone (formation)
   • https://doi.org…018-022-03078-5

8. poststroke dementia(English)

   • ADL, BI, CVD, EGb, FAQ, GRADE, HDS, MID, MMSE, MoCA, VCI
   • Dementia, Cerebrovascular event
   • https://doi.org…55/2021/8787684

9. particle size distribution(English)

   • CEL, DL, DPI, DSC, ED, FT-IR, GRA, TAB, LAC
   • Pharmacology / pharmaceutics, Respiratory system
   • https://doi.org…arm.2011.12.018

10. Park sham device(English)

    • can be used to administer both manual acupuncture and placebo acupuncture
    • TCM
    • Alternative medicine
    • https://doi.org…063-022-06510-7

11. pseudostandard deviation(English)

    • SD, CMH, POY
    • Statistics
    • https://doi.org…C2014-0-02732-3

12. peak strain dispersion(English)

    • calculated as the standard deviation of the time to peak strain in each segment as a parameter of heterogeneous ventricular contraction
    • ECG, EROA, GLS, GWE, GWI, GWW, LVEDV, LVESV, MAD, MVP, MW, PSL, PSM, PSS, PVC, VA, VF, VT
    • Biophysics, Cardiology
    • https://doi.org…ard.2024.132434

13. phase standard deviation(English)

    • may refer to intra-LV kinetic energy assessment
    • BW, CMR, EDV, IHD, KEi, LVEF, PA, PET, TPD
    • Medical imaging, Hemodynamics, Cardiology, Biophysics, Entropy, Signal analysis
    • https://doi.org…ard.2026.134200

14. peak systolic dispersion(English)

    • defined as the standard deviation of the time from the onset of the QRS complex to peak systolic strain across all LV segments (ms). Also denoted as peak strain dispersion
    • CAD, CCI, ECG, GLS, GWE, GWW, HFpEF, HTN, LVEF, LVH, LVM, mCCI, MI, QRS, RWT, SBP
    • Cardiology, Medical imaging, Pathology, Biophysics, Electrophysiology
    • https://doi.org…1111/echo.70498