There are multiple definitions:

1. atrial septum defect(English)

   • VSD
   • Cardiology, Congenital disorders

2. autism spectrum disorder(English)

   • ADHD, BIF, POGZ, NDD, ToM, RRB, AOC, AOD, MEF2, NDC, IAN
   • Psychology, Disability, Pediatrics, Data exchange
   • https://doi.org…155/2011/874619

3. absolute standardized difference(English)

   • Statistics

4. azoospermia due to spermatogenic dysfunction(English)

   • when sperm cannot be retrieved from the testes, there is no rational way for the patient to become a biological father
   • TESE
   • Genitals, Andrology
   • https://doi.org…68.2015.1024897

5. adjacent segment degeneration(English)

   • affected by preexisting lamina horizontalization at the cranial fusion segment
   • PLIF, ACDF, AE, CAC, CDA, DDD, FDA, FSU, HO, HPD, IDE, LP, MCS, NDI, NRS, PCS, SF-36
   • Anatomy, Surgery
   • https://doi.org…b013e31817bb9c2
   • https://doi.org…6.10.SPINE16264

6. adult spinal deformity(English)

   • ALIF, ASA, CCI, EBL, LIF, LL, LOS, ODI, PI, PI-LL, PSF, PT, SVA, TK, TLIF, VAS, ISSG, SDSG, SRS-22
   • Spine (or spinal cord), Pathology
   • https://doi.org…6.8.SPINE151543
   • https://doi.org…20.5.FOCUS20192
   • https://doi.org…4.12.SPINE14777

7. adjacent-segment degeneration(English)

   • refers to spondylolisthesis and comparison between dynamic stabilization and minimally invasive transforaminal lumbar interbody fusion
   • DDD, DDS, JOA, MI-TLIF, ODI, ROM, TLIF, VAS
   • Spine (or spinal cord), Neuropathy, Surgery
   • https://doi.org…18.1.SPINE17993

8. amorphous solid dispersion(English)

   • created to improve aqueous solubility and bioavailability of new active pharmaceutical ingredients
   • API, SDD
   • Pharmacology / pharmaceutics
   • https://doi.org…02447-8.00030-3

9. accredited sports dietitian(English)

   • CVI, DA, PEAKS, PEAKS-NQ, NQ, S-CVI
   • Diet, Exercise & Training, Specialist / expert
   • https://doi.org…007114520004286