What's the plural form of arecoline? Here's the word you're looking for.
Answer
The noun arecoline can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be arecoline.
However, in more specific contexts, the plural form can also be arecolines e.g. in reference to various types of arecolines
or a collection of arecolines.
Examples
Arecoline is an oil, and the physiological action of the betel nut is alone due to this substance.