(1) A moderate-sized computer that can serve many users in a department, or one dedicated to a complex computational function such as computed tomography or magnetic resonance imaging; smaller and slower than a mainframe, more complex and powerful than a personal computer. (2) A miniature nerve potential occurring when a single neurotransmitter vesicle's contents are released. [It. miniatura, decoration of manuscripts, fr. L. minium, red lead]
