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

See also: elastic, expansive

• Iago
• iamb
• iambic
• iambic pentameter
• iambus
• Ian Douglas Smith
• Ian Fleming
• Ian Lancaster Fleming
• Ian Smith
• Ian Wilmut
• ianfu
• Iapetus
• IATA
• iatrogenic
• ib.
• Ibadan
• IBDA-C
• Iberia
• Iberian
• Iberian Peninsula
• Iberis
• Ibero-mesornis
• Ibert
• ibex
• ibid.