ry BY2 cmavo

letteral for r.

In notes:

x1 (letteral: la'e zo BY/word-bu) is a hyphen/joining letter(al) in language x2 with function in/context of use/with rules for use/with properties x3, joining prefixed unit/lexeme/morpheme/string x4 (quote) to postfixed unit/lexeme/morpheme/string x5 (quote) in construct (full word) x6 (quote)
imaginary i, comma - spherical coordinates: first coordinate gives magnitude (complex modulus/radius) of the number, the second number gives the angle from the positive real axis measured counterclockwise toward the 'positive' imaginary axis (default: in the primary branch/Arg) as measured in some units (which that number should contain; the contextless default will suppose radians); the angle is not normalized.
mekso n-ary operator: reciprocal of the sum of the reciprocal of each of X1, X2, ..., Xn (for any natural number n); 1/((1/X1) + (1/X.