IAS or i.a.s.

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

• problem page
• problem pages
• problem play
• problems
• problem-solving behaviour
• pro bono
• pro bono publico
• Proboscidea
• proboscidean
• proboscideans
• proboscides
• proboscidian
• proboscidians
• proboscis
• proboscises
• proboscis monkey
• proboscis monkeys
• probouleutic
• probs
• Probus
• procacious
• procacities
• procacity
• procaine
• procaines