Sundial reading is the practice of telling time by observing the position of the sun and the SHADOWS it casts. The term SUNDIAL READING is composed of three words: SHADOW (6 letters), III (3 letters), and SHADOWS (7 letters). The first word, SHADOW, refers to the dark shape cast on a surface when an object blocks light. The second word, III, is a Roman numeral that stands for the number 3. The third word, SHADOWS, is the plural form of the word SHADOW. Together, these three words describe the practice of using the sun's position and the SHADOWS it casts to tell time.