What's the plural form of tremulation? Here's the word you're looking for.
Answer
The noun tremulation can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be tremulation.
However, in more specific contexts, the plural form can also be tremulations e.g. in reference to various types of tremulations
or a collection of tremulations.
Examples
Short-winged female meadow katydids discriminate among tremulation signals of males to choose a larger male, even in the absence of a signalling male.