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