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