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