max·i·mal·ist (māk'sə-mə-lĭst) n. One who advocates direct or radical action to secure a social or political goal in its entirety: "the maximalists . . . who want the undivided land"(Arthur Hertzberg).
[Russian maksimalist, name applied in 1906 to an extreme splinter group of the Russian Socialist Revolutionary Party, ultimately from Latin maximum, maximum; see maximum.] max'i·mal·ist adj.