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

See also: elastic, expansive

• impudently
• impudicity
• impugn
• impugnable
• impugner
• impuissance
• impuissant
• impulse
• impulse explosive
• impulse turbine
• impulse-buy
• impulsion
• impulsive
• impulsively
• impulsiveness
• impunity
• impure
• impurely
• impureness
• impurity
• imputable
• imputation
• impute
• imputrescible
• IMU