There is no good definition Basically, it is a person interested in futures-related work A small number work full time on the topic, many more are part time futurists and full time doing something else They range from popular writers to highly technical experts in selected areas Their views are in agreement on some things and vary widely on others
{i} supporter of futurism (modern art movement that originated in Italy in the early 1900's)
One whose chief interests are in what is to come; one who anxiously, eagerly, or confidently looks forward to the future; an expectant