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