The dimensions were strange

[Tinkerbell]

We’d reached the top of the stairs by then, but we were still underground. There were no windows in the long corridor I found myself in. Suits of armor lined the walls, but these looked different from the ones I’d seen in other parts of Thorne. The dimensions were strange, and many of the suits were freakishly huge. Fear raced over me and through me, and once again, I felt my magic thump pitifully, uselessly, inside me.

[Leandro-Z]

It means that something normally has a certain size was, there, much bigger or smaller. For example: Mice were as tall as a giraffe.