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

See also: elastic, expand, expansive

• Mulloidichthys
• Mulloidichthys martinicus
• mulloway
• Mullus
• Mullus auratus
• Mullus surmuletus
• Mulroney
• multi-
• multi-billionaire
• multi-engine aeroplane
• multi-seeded
• multi-stemmed
• multi-valued
• multibank holding company
• multicellular
• multichannel recorder
• multicollinearity
• multicolor
• multicolored
• multicolour
• multicoloured
• multicultural
• multiculturalism
• multidimensional
• multidimensional language