cossian
Cossian is a term that can function as an adjective or a demonym formed from the stem “Coss-” with the common suffix “-ian.” It does not have a single, widely recognized definition in major reference works, and its meaning is highly dependent on context.
In historical or ethnographic use, some authors may employ “Cossian” to describe a people, culture, or language
In fictional or speculative contexts, “Cossian” is more commonly used as the name of a fictional culture,
As an onomastic form, “Cossian” can appear as a surname or as a derived element in place
Etymology is straightforward: the suffix “-ian” is used to form adjectives and demonyms in English, attached