medio-, medi-

1. Occurring after noon or midday; of or pertaining to the afternoon.
2. After midday; applied to the hours between noon and midnight; usually abbreviated pm or p.m.

The middle way.

The moderate course of action between two extremes.

The name is given, in particular, to the High Anglican doctrine of the Caroline divines, revived by the Tractarians (1833-43), and thought to be at once the middle and true course between pure Protestantism and "the errors of Rome" (The Roman Cathkolic Church).