Search philtrum philtrum /fil′trəm/ , the vertical groove in the center of the upper lip. Tweet Telegram VK Random Words patient compensation fund metastatic survey esophageal cancer kleptolagnia hyperlipidemia type V syndrome of inappropriate antidiuretic hormone secretion (SIADH) ancylo-, ancyl-, anchyl-, anchylo-, ankylo-, ankyl- low-grade fever facial nerve