arc - auxi
- asbovinyl
- ascending branch of curve
- ascending chromatographic technique
- ascending gas current
- ascending pipe
- ascension
- ash
- ash blending
- ash coal
- ash component
- ash constituent
- ash content
- ash corrosion
- ash discharge
- ash distribution curve
- ash error
- ash fusion furnace
- ash removal
- ash tank
- ash-forming impurities