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