What is the meaning of the word "economic"?

Definitions:

concerned with worldly necessities of life, especially money adjective
- They wrote the book primarily for economic reasons.
financially rewarding adjective
- it was no longer economic to keep the factory open
of or relating to an economy, the system of production and management of material wealth adjective
- economic growth
of or relating to the science of economics adjective
- economic theory
using the minimum of time or resources necessary for effectiveness adjective
- an economic use of home heating oil