There are multiple definitions:

1. American Hospital Association(English)

   • Hospital, Organizations (clinical), Care giver/provider

2. American Heart Association(English)

   • Cardiology, Charity, Organizations (scientific)

3. alpha hydroxy acid(English)

4. anterior hypothalamic area(English)

   • Anatomy, Brain (dys)function

5. autoimmune hemolytic anemia(English)

   • Autoimmunity, Hematology

6. acquired hemolytic anemia(English)

   • Hematology

7. aangeboren hartafwijking(Dutch)

   • Congenital disorders, Cardiology

8. Assisting Hand Assessment(English)

   • provides a new perspective of hand function evaluation relevant for children with unilateral upper limb disabilities. It measures how effectively the involved hand is actually used for bimanual activity
   • Mini-AHA
   • Pediatrics, Neurology, Disability
   • https://doi.org…49.2007.00259.x

9. anti-hordein antibody(English)

   • AGA, PT, TG2
   • Nutrition, Gastroenterology, Allergy, Biopsy, Immunology
   • https://doi.org….3390/nu7031657