The phrase "airtight structure" is correct and usable in written English.
It can be used to describe a design or system that is completely sealed or impervious to outside influences, often in contexts related to engineering, architecture, or argumentation.
Example: "The architect designed an airtight structure to ensure that no air leaks would compromise the building's energy efficiency."
Alternatives: "sealed design" or "impermeable construction".
The builders needed a hollow airtight structure that would keep the water out while they moved lower.
The sense of detail is meticulous and perverse; the killer's unnervingly delicate insertion of the murder implement is purest Polanski, as is the clean, airtight structure.
When it can be justified that major pressure buildups are not to be expected, the containment may be any functional form of airtight structure.
Silo, in agriculture, airtight structure that encloses and protects silage (partially fermented fodder, called haylage if made from grass), keeping it in the succulent and slightly sour condition edible for farm animals.
To avoid carbon dioxide being captured by both enzymes, C4 plants evolved to relocate RuBisCO from the mesophyll to a second set of cells in an airtight structure known as the bundle sheath.
The design required attention to how airtight the structure should be, the choice of insulation materials and tweaks for the heating system, he said.
And that work, taken as a whole (all three movements), is a prime example of Beethoven's uncanny ability to create airtight musical structures that still come across as rhapsodic and improvisatory.
Not covering the container or shutting it airtight leads structures of ice crystals and bad odors in the freezer.
Changes in building design devised to improve energy efficiency have meant that modern homes and offices are frequently more airtight than older structures.
And talk about structure: "Esplanade" is airtight.
That's because these structures are more airtight than conventional homes and thus concentrate whatever fumes occur in them.
