anti-freezing - atomic formulae
- area of evaporation
- area of passage
- area rule
- area sketch
- area-increasing flap
- areal
- areal geology
- areal velocity
- arenaceous quartz
- arenaceous rock
- areolar tissue
- argentic chloride
- argentic sulphide
- argentiferous
- argentite
- argil
- argillaceous rock
- argillaceous slate
- argon casting
- argon filling
- argon-arc furnace
- argon-cast ingot
- argument
- aril
- arithmetic instruction
- arithmetic operation
- arithmetic organ
- arithmetic progression
- arithmetic register
- arithmetic series
- arithmetic shift
- arithmetic technique
- arithmetic unit
- arithmetic-logical unit
- arithmetical instruction
- arithmetical progression
- arkose
- arm bracket
- arm file
- arm indicator
