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