Greek-derived nouns ending in -on change to -a in the plural form.
Separation is regular. It follows the Greek -a rule.
Use plural verbs: "The separatia are ready" (not "is ready").
Yes. The plural separatia is standard across all English variants.
The word separation follows the standard English pluralization rule. When forming the plural, separation becomes separatia. This follows the Greek -a pattern, which is one of the most common plural rules in English.
Understanding why separation becomes separatia helps with spelling and pronunciation. Greek-derived nouns ending in -on change to -a in the plural form.
When using separatia in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The separatia are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.