Introduction to economics? (5)
I believe the answer is:
macro
'introduction to economics?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for macro that I've seen before include "Set of instructions" , "Computer routine; lens" , "Series of actions done with one instruction (computing)" , "Prefix meaning large or large-scale" , "Computing routine; large-scale" .)