👉 In the context of linguistics and semantics, "prostoa" is a term used to describe a noun that has an inflectional form (a suffix appended to the end of the word) in its singular form. This can be useful for identifying the gender, number, or number of the noun. For example, in English, the noun "apple" is usually considered feminine ("apple" is masculine in Latin). However, it has an inflectional form that ends with "-a