- a (keen) wrestler
- a (lustful) woman
- adermin
- antiberiberi factor
- aneurin
- adult female
- atomic number 56
- atomic number 5
- antipernicious anemia factor
- anthrax bacillus
- ab
- artium baccalaurens
- alloy
- await
- act up
- arena
- act
- area
- affect
- adhere
- analyse
- alter
- ask over
- askant
- abide by
- adopt
- analyze
- aim
- appurtenance
- alternate
- assemble
- add on
- annex
- appendage
- affix
- attacapan
- attach to
- appellative
- adenine
- axerophthol
- angstrom unit
- amp
- antiophthalmic factor
- a k
- a la
- a one
- a_horizon
- a ok
- ampere
- angstrom