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