Active support for something, especially in order to help people who would have difficulty in gaining attention without your help.
Attempting to persuade others of the lightness of a cause, or of a point of view on an issue. Such educational efforts—for example, health education—are increasingly undertaken by hospitals and other nonprofit organizations, but if they are addressed at passing or defeating legislation, they may be classified as lobbying and therefore endanger the organization’s tax-exempt status.
In health care, pleading or representation for a desired goal or interest group, such as patients, staff, providers, biomedical researchers, or others.