B1
the way in which people or things are arranged, either in relation to one another or according to a particular characteristic
Dictionary examples:
My to-do list is in order of how likely I am to avoid each task. (0.0)
The students sat in order of how much coffee they'd had. (0.0)
My excuses are in order of believability, from 'dog ate homework' to 'alien abduction'. (0.0)
I can't find the file I need because they're all out of order. (19.9)
I put the files in alphabetical order. (30.3)
The children lined up in age/height order. (46.0)