As


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AS

 (L.)
au´ris sinis´tra (left ear).

As

Symbol for arsenic.

As

The profile area of a slab-sectioned corpuscle or nucleus, a quantity measurable by image cytometry.

AS

Abbreviation for:
absence seizure
absence of seizures
accessory spleen
acoustic schwannoma
acoustic stimulation
active surveillance
acute stress
Adams-Stokes
adenosquamous carcinoma
adult services
allele specific
Alport syndrome
ambulatory surgery
anabolic steroid
anal sphincter
anaphylactic shock
androgen suppression
angiosarcoma
anionic surfactant
ankylosing spondylitis
anovulatory syndrome
anterior scalene
anteroseptal
antisense
antiserum
aortic stenosis
arteriosclerosis
artificial sweetener
asbestos
ascending aorta
Ascaris suum
ascorbic acid
aseptic meningitis
asparagine synthetase
Asperger syndrome
assisted suicide
Associate of Science
Associate Specialist (Medspeak-UK) 
atherosclerosis
atrial septum
atropine sulphate
attempted suicide
audiogenic seizure
audiovisual stimulation

As

Symbol for arsenic