1. Able to expand or be expanded
   - expandable, expandible 
2. (of gases) capable of expansion
   - expandable, expandible, expansile

See also: elastic, expand, expansive

• widow's walk
• widow's weeds
• widowed
• widower
• widowhood
• widowman
• width
• widthways
• widthwise
• Wieland
• wield
• wielder
• wieldy
• wiener
• wiener roast
• Wiener schnitzel
• wienerwurst
• wienie
• Wiesbaden
• Wiesel
• wiesenboden
• Wiesenthal
• wife
• wifehood
• wifeless