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