commercialist noun2 •Someone who engages in commerce.To the more liberal education of commercialists, when compared with that of agriculturists, may justly be ascribed the commercial ascendancy over the agricultural community. — 1848 •Someone who supports commercial activity.Both sides--the "commercialists" and the "conservationists"--blitzed with outside endorsements, tours, advertisements, fliers, newspaper articles, and radio and TV publicity. — 1988 formscommercialists