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

See also: elastic, expand, expansive

• cross-fertilize
• cross-file
• Cross-Florida Waterway
• cross-grained
• cross-index
• cross-leaved heath
• cross-legged
• cross-linguistic
• cross-linguistically
• cross-link
• cross-linkage
• cross-modal
• cross-ply
• cross-pollinate
• cross-pollinating
• cross-pollination
• cross-purpose
• cross-questioner
• cross-refer
• cross-reference
• cross-sectional
• cross-sentential
• cross-shaped
• cross-staff
• cross-stitch