circulant
noun
cir·cu·lant
ˈsərkyələnt,
-ə̄k-,
|-əik-
plural -s
: a mathematical determinant in which each row is derived from the preceding by cyclic permutation, each constituent being pushed into the next column and the last into the first so that constituents of the principal diagonal are all the same
Word History
Etymology
Latin circulant-, circulans, present participle of circulare to make round