mekso 7-ary operator: for input (X_{1 }= z, X_{2 }= (a_{i)}= (b_{j)}= p, X_{5 }= q, X_{6 }= h_{1, X}= h_{2)}, this word/function outputs/yields \sum_{n}=0^\infty (((\prod_{i }= 1^{p (}ne'o'o(a_{i,n,1,h}= 1^{q (}ne'o'o(b_{j,n,1,h}; by default, X_{6 }= 1 = X_{7} unless explicitly specified otherwise.

See "ne'o'o" (Pochhammer symbol); however, for the purposes of this definition and regardless of the definition(s) provided at "ne'o'o", here ne'e'o(Y_{1, Y}= \prod_{k }= 0^Y_{2 - 1 (Y} by local definition; ne'o'o(Y_{1, Y}= 1 for all Y_{2 < 1}, regardless of the other inputs Y_{m} (so long as they belong to the domain); by default, Y_{4 }= 1 unless explicitly defined otherwise. For the main definition: z is a complex number, and (a_{i)} and (b_{j)} are (pre)defined sequences (id est: functions with domains being exactly the set of exactly all positive integers) such that, for all positive integer indices i and j respectively, their terms/outputs are complex numbers; both (a_{i)} and (b_{j)} are indexed starting at 1; also, p, q, h_{1, h} are positive integers; by default, h_{1 }= 1 = h_{2} unless explicitly specified otherwise. X_{2} and X_{3} may require usage of "mau'au" and "zai'ai".