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