What's the plural form of efficience? Here's the word you're looking for.
Answer
The noun efficience can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be efficience.
However, in more specific contexts, the plural form can also be efficiences e.g. in reference to various types of efficiences
or a collection of efficiences.
Examples
Swing through life with energy efficience and elan.
Economic efficience is a condition of farming that comparing between actual profit and maximum one.