IAS or i.a.s.

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

• lieutenantship
• lieutenantships
• lieve
• liever
• lievest
• lie with
• life
• life-affirming
• life-and-death
• life annuity
• life assurance
• life assurances
• lifebelt
• lifebelts
• lifeblood
• lifebloods
• lifeboat
• lifeboatman
• lifeboatmen
• lifeboats
• lifebuoy
• lifebuoys
• life class
• life classes
• life coach