What's the plural form of frangibility? Here's the word you're looking for.
Answer
The noun frangibility can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be frangibility.
However, in more specific contexts, the plural form can also be frangibilities e.g. in reference to various types of frangibilities
or a collection of frangibilities.
Frangibility is addressed as a recommendation for other runway types.
However, the two underlying fundamental principles that are essential for good design are either frangibility or non-penetration with controlled redirection.