| Rating | Solver | Clue |
|---|---|---|
| RADIUS | Half-diameter | |
| SEMICIRCLE | The half of a circle; the part of a circle bounded by its diameter and half of its circumference. | |
| SEMIDIAMETER | Half of a diameter; a right line, or the length of a right line, drawn from the center of a circle, a sphere, or other curved figure, to its circumference or periphery; a radius. | |
| SATURN | ... round the sun, nearly twenty-nine years and a half. It is surrounded by a remarkable system of rings, and has eight satellites. ... |