area cover - axial elongation
- armored collar
- armored concrete
- armored concrete structure
- armored electro-hydraulic umbilical
- armored glass
- armored hose
- armored subsurface thermometer
- armoring
- armoured cable
- armoured concrete
- armoured glass
- armoured thermometer
- ARMS
- arms length negotiations
- Armstrong-Whitworth variable compression knock testing engine
- ARN
- ARO
- arom
- aroma
- aromatic adsorption index
- aromatic adsorption method
- aromatic alcohol
- aromatic cacodyl
- aromatic chemicals
- aromatic compound
- aromatic extract
- aromatic fuel
- aromatic halide
- aromatic hydrocarbon
- aromatic hydrocarbon (aromatics)
- aromatic mercurial
- aromatic oil
- aromatic petroleum residues
- aromatic series
- aromatic solvent
- aromatic substance
- aromatic tincture of rhubarb
- aromatic water
- aromatic-base crude
- aromatic-base crude oil
