1. Plural of interstage; intermediate stages or phases between two main stages of a process or development.
Usage: Often used in technical, scientific, or industrial contexts
2. In rocketry, the structural sections or connectors between successive rocket stages.
Usage: aerospace/technical

Examples

• The interstages of the manufacturing process required careful quality control.
• Engineers designed lightweight interstages to connect the rocket's upper and lower stages.
• The interstages between childhood and adulthood involve significant physical and emotional changes.
• The interstages of the project included planning, prototyping, and testing phases.
• Rocket interstages must withstand extreme forces during stage separation.