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