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