Answer:
Curriculum derives from Latim ( it means “course”)
It is a noun ( we can find this information in " part of speech")
The plural form of the word "curriculum" can be: curricula or curriculums.
We can find this information inside its "plural form"
All the dictionaries give us the plurals for nouns that have irregular plurals. If you don't find the plural form of a noun, it means the noun has a regular plural.