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