1. unable to be compressed or squeezed into a smaller space
2. (of a fluid) having constant density and unable to be compressed under pressure
Usage: physics; engineering

Examples

• Water is considered incompressible for most practical engineering applications.
• The incompressible nature of the material made it ideal for the structural support.
• Unlike gases, liquids are generally incompressible.
• The engineer designed the system assuming incompressible flow.
• Diamond is one of the most incompressible substances known to science.
• The incompressible foam maintained its shape even under heavy pressure.