There are multiple definitions:

1. acetylsalicylic acid(English)

   • aka aspirin
   • Preventive medicine, Pharmacology / pharmaceutics, Pain

2. atrial septal aneurysm(English)

   • Cardiology, Pathology

3. aspartate semialdehyde(English)

4. American Stroke Association(English)

   • on average, someone in the U.S. dies of stroke every 3 minutes and 11 seconds. Nearly 47% of U.S. adults are estimated to have hypertension. Stroke accounts for 17.5% of total cardiovascular disease deaths. Stroke deaths in the U.S. increased by 28.7% between 2012 and 2022
   • AHA, CVA, ESO, WSO
   • Cerebrovascular event, Organizations (documentation)
   • https://www.stroke.org/en/

5. American Society of Anesthesiologists(English)

   • see their pre-operative physical status classification system
   • Anesthesiology/analgesia, Classification
   • https://www.asahq.org/
   • https://www.asa…fication-system

6. Australasian Sleep Association(English)

   • Sleep medicine, Organizations (clinical)
   • https://www.sleep.org.au//

7. American Standards Association(English)

   • Standards, Organizations (documentation)
   • https://en.wiki…dards_Institute

8. anti-sperm antibody(English)

   • Immunology, Andrology, Embryology /reproduction

9. American Surgical Association(English)

   • Surgery, Organizations (clinical)

10. American Statistical Association(English)

    • Statistics, Organizations (scientific)

11. alcohol septal ablation(English)

    • used for treatment of medically refractory hypertrophic obstructive cardiomyopathy patients with severe left ventricular outflow tract (LVOT) obstruction
    • LVOT, HCM, SRT
    • Cardiology, Alcohol, Therapeutic approaches
    • https://doi.org…IONS.115.002675
    • https://doi.org…acc.2023.11.013

12. anterior septal angle(English)

    • refers to dorsal reconstruction in primary rhinoplasty after cartilage dorsum excision
    • ECS, NOSE, SDA, ULC
    • ENT, Surgery
    • https://doi.org…0266-010-9641-4

13. authorized shared access(English)

    • Communication
    • https://doi.org…OC.2014.2298437

14. all-soft suture anchor(English)

    • refers to medial patellofemoral ligament reconstruction
    • ACL, MPFL, SA
    • Orthopedics, Sports medicine, Biophysics
    • https://doi.org…363546517691951

15. atrial short-axis area(English)

    • LVEDP, VSA
    • Cardiology, Medical imaging
    • https://doi.org….1038/srep43505