Am I not referring to nested and multidimensional arrays correctly?

Question

JavaScript

There are
multidimensional arrays

multidimensional = [
[1,2],
[1,2,3],
[4]
]

accessing element 0, 1 array = multidimensional[1][0]

and

nested arrays nested = [1,2,[1,2,3],4];
accessing element 0, 2 nested arrays = nested[2][0]
so weird

Answer 1

Yes, this is the form in most (if not all) languages.