- a thief or a swindler
- arithmetic precedence
- a women's man
- anthocyanin pigment
- a life_belt
- acute infectious hepatitis
- anaglyptic
- abdominal retractor
- agnes de mille
- agnes george de mille
- anticoincident element
- anticodon
- amylopectin
- allantoic acid
- adsorbed haemolysis test
- adsorptive
- Angolese
- asmera
- antiformin
- agrippina the elder
- agrippina the younger
- amyelinated fibre
- air to ground
- at a rate of knots
- ansa lenticularis
- a kind of fire_ work
- aeolotropic
- anthropic
- anthropogenetic
- as sick as a parrot
- aeolia
- afrl
- antenna tuning coil
- anamnestic response
- archesporium
- artificial blood
- adirondack mountains
- as dead as a doornail
- a defence_post
- aksa martyrs brigades
- a haven
- apothecaries
- a deep sigh
- absorption of photoelectric emission
- assisted
- actnomyces
- a darner
- alginate
- alginic acid
- aquitania