- an inkport
- a tumbler
- a tiffin_carrier
- an incense_stick
- a rustle of leaves to be produced some apprehension to be caused
- acute appendicitis
- acquired hepatic porphyria
- acquired immunity
- appalling
- adventitious root
- Anglo_French
- a french
- analog converter
- apricot bar
- alactasia
- a subedar_major—non_commissioned army rank
- a leading article
- aeromatic fluid bed drier
- a series of calamities to befall
- a wrist watch
- afghani
- actinic injury
- an exceptionally pretty damsel
- adaptative
- amphibiotic
- absentmindedness
- archepiscopal
- autofluorescence
- absorption line
- alizarin crimson
- alizarin red
- acid bath
- acer saccharum
- active principle
- a wound to heal up
- abroad
- adynamic
- a necessary evil
- active movement
- as right as rain
- acid_base balance
- active degeneration
- acid_base equilibrium
- absorption co_efficient
- absorptimetry
- absorpotion period
- Achilles tendon
- acer circinatum
- arrhythmic zone
- armata corsa