Ge-midlian

According to the Old English Dictionary:

-middlian;

ge-midlian

p. ode; pp. od [middel middle] To divide, separate in the middle; dimidiare :-- Fácenfulle ná gemidliaþ dagas heora dolosi non dimidiabunt dies suos, Ps. Spl. C. 54, 27. ge-midlian