IAS or i.a.s.

1. Immediate access store (computing)
2. Immigration Advisory Service
3. Indicated air speed (aeronautics)
4. Instrument approach system

• stereoisomer
• stereoisomeric
• stereoisomerism
• stereoisomers
• stereome
• stereomes
• stereometer
• stereometers
• stereometric
• stereometrical
• stereometrically
• stereometries
• stereometry
• stereophonic
• stereophonically
• stereophonies
• stereophony
• stereopses
• stereopsis
• stereopticon
• stereopticons
• stereoptics
• stereos
• stereoscope
• stereoscopes