📚 Philtrum, noun. 🔉 /ˈfɪltrəm/ 🇬🇧 ❓ Definition (Anatomy): The vertical groove between the base of the nose and the border of the upper lip. ❗️ Examples: 1. A 37-year-old woman presented for evaluation of a scar on her philtrum. 2. Nothing makes a man more adorable than a well-shaped philtrum. 3. Nevertheless, early correction may be indicated because the prolabium usually contains more than enough tissue to create a philtrum of normal size. 4. The philtrum, on the upper lip, is bounded by ridges that run from under each nostril marking the fusion of the premaxilla and the lateral maxillary processes. 5. A flat or smooth philtrum can present in persons with fetal alcohol spectrum disorders. ━━━━━━━━━━━━━ 🌀 @cambridge_dic