- air lock
- amyloidosis cutis
- anuretic
- a kind of cactus
- at the top of voice
- a person's apple_cart to be upset
- a slothful drowsy person
- abatic
- abasic
- a convention (written agreement)
- a ruddy goose— anas casarca
- abaya
- a rule of thumb
- a performer of a ceremony
- a vial
- a phial
- ampule
- an all_round view
- a panoramic view
- anorthite
- Alpine besseya
- ambloplites rupestris
- amethyst
- amethystine python
- aquamarine
- alfisols
- alfred
- a word uttered while offering oblation to sacrificial fire
- ammonium carbonate
- azocarmine
- ammonium nitrate
- aladdin
- alal tag
- a venomous
- abaction
- abada
- algorithm associative language
- algorithm classification
- arithmetic operator
- acalculia
- algorithmic routine
- algarrobilla
- algebraic
- amygdalotomy
- affine geometry
- analytical geometry
- a heart of stone
- atrioventricular nodal rhythm
- and of the body according to
- arrangements