1. relating to or causing expansion or enlargement, especially of a body part or cavity
Usage: medical/technical
2. of or relating to the process of dilation; involving an increase in volume or diameter
Usage: physics, engineering

Examples

• The dilatational effect of heat on the metal caused it to expand.
• Dilatational waves propagate through the material during the seismic event.
• The patient experienced dilatational cardiomyopathy, a condition affecting heart function.
• Engineers studied the dilatational properties of the new polymer.
• Dilatational stress can occur when materials are heated unevenly.