Circle segments are parts of a circle that are divided by two or more points. The three crossword solutions for the term 'circle segments' are radiuses (8 letters), arcs (4 letters), and RADII (5 letters). A radius is a line segment connecting the center of a circle to any point on its circumference. An arc is a curved line that is part of the circumference of a circle. RADII is the plural form of radius.