fron·tier n 1: a wilderness at the edge of a settled area of a country 2: an international boundary or the area (often fortified) immediately inside the boundary 3: an undeveloped field of study; a topic inviting research and development.  Frontier includes contributions by Jimmy Baker, Patty Chang, Wendell Gladstone, Charles LaBelle, Max Maslansky, Lester Monzon, Aya Uekawa and Amir Zaki.