📚 Gnomon, noun. 🔉 /ˈnəʊmɒn/ 🇬🇧 ❓ Definition: The projecting piece on a sundial that shows the time by the position of its shadow. ❗️ Examples: 1. The problem is that the gardeners have been caught on the gnomon of their own sundial. 2. He also probably introduced the gnomon (a perpendicular sun-dial) into Greece and erected one in Sparta. 3. He placed a pole perfectly upright in the ground to make a simple sundial, or gnomon. 4. To ensure that the sundial registered roughly the correct time all the year round the gnomon had to be set at exactly the correct angle. 5. The simplest astronomical instruments was the gnomon, nothing other than a stick which was erected and the length of its shadow measured. ━━━━━━━━━━━━━ 🌀 @cambridge_dic