Abbreviation Definition
Aabsorbance
aabsorptivity
Aaccessory
Aacetum
Aactin
AActinomyces
Aadenosine
Aadmittance Electricity
Aadrenaline
Aadriamycin
AAdults & Communities
Aakinetic
Aalanine
Aalcohol
Aalert and responsive
Aallele
Aallergist
Aallergy
Aalternating current
Aalveolar gas