Farming was always a marginal activity in the High Weald.

Once a marginal activity, Outsider art has developed its own collecting constituency, expert critics and aggressive promotional apparatus.

General practice based education is still a marginal activity.

For many countries, ecotourism is not simply a marginal activity to finance protection of the environment, but is a major industry of the national economy.

Partial agonists are seen as compounds with "marginal activity".

It took root very quickly for a number of economic and social reasons, becoming, instead of a marginal Christian activity, the dominant religious form.

Until recently, graduate teaching was a very marginal activity.

Work with the poor and the oppressed is a marginal activity.

The institution that supports Venuti's marginal activities - Temple University - gave him a study leave and a research fellowship.

Such marginal activity has been going on for decades and will very likely never stop.