Still, a highly irregular period is usually a sign that something else isn't right in your body.. Take note of these 10 things that could be messing with your menstrual cycle, and see your doc if anything seems too far off. 1 of 12. View as one page.
immutable - not subject or susceptible to change or variation in form or quality or nature; the view of that time was that all species were immutable, created by God
permutation A permutation is a change or variation, like the many possible permutations of hair color you get when you start experimenting with different dyes. Permutation is made of the prefix per for thoroughly and mutation, which means âchange.â A permutation is a thorough change of something, like a substitution. Asking a waiter to give you sweet potato fries instead of regular fries is a permutation. Switching hats with a friend is a permutation.