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