1. The plural of gastightness; the quality or state of being impermeable to gas or preventing gas from escaping or entering.
Usage: Technical term used in engineering, materials science, and industrial contexts.; Plural form of the abstract noun gastightness.

Examples

• The engineers tested the gastightnesses of various sealing materials for the pipeline.
• Different rubber compounds exhibited varying gastightnesses under pressure.
• The specifications required gastightnesses of less than 0.1 cubic centimeters per minute.
• Quality control measured the gastightnesses of each container before shipment.
• The research compared the gastightnesses of traditional and modern gasket designs.