What's the plural form of crossbracing? Here's the word you're looking for.
Answer
The noun crossbracing can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be crossbracing.
However, in more specific contexts, the plural form can also be crossbracings e.g. in reference to various types of crossbracings
or a collection of crossbracings.
