- analog channel
- analog multiplier
- analog representation
- analog data
- analog divider
- abdonmial ostium
- arthur compton
- antipodal opposition
- at critical juncture
- antithromboplastic anticoagulant
- asura
- at a price
- an inkling of the plot
- anu
- aerial earthing switch
- antenna coupler
- aerial inductance
- alveolar capillary block
- adjacent channel
- adjacent domain
- adjacent matrix
- alveolar membrane
- aditi
- aditus of lesser sac
- as snug as a bug in a rug
- acute compression triad
- angle of friction
- augmented unipolar lead
- all well and good
- aschelminthes
- a week tuesday
- any minute now
- an oblique form of
- a provoking remark uttered in a lighter vein
- analog type
- as easy as anything
- as easy as falling off a log
- absorbefacient
- a large_size dried grape
- anuclear zone
- alveolar oxygen tension
- any time now
- aleksandr mikjailovich prokhorov
- acoustic coupler
- asama
- a guilty conscience cannot shed off its alarmed stance
- as much as the next man
- antradrenergic drug
- anilininum cation
- alcoholic pellagra