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