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