Definition of philtrum in English:



  • 1The vertical groove between the base of the nose and the border of the upper lip.

    • ‘Nevertheless, early correction may be indicated because the prolabium usually contains more than enough tissue to create a philtrum of normal size.’
    • ‘Geordie leaned over and carefully daubed a Hitler moustache across Danny's philtrum.’
    • ‘A flat or smooth philtrum can present in persons with fetal alcohol spectrum disorders.’
    • ‘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.’
    • ‘Nothing makes a man more adorable than a well-shaped philtrum.’
    • ‘A 37-year-old woman presented for evaluation of a scar on her philtrum.’
    1. 1.1 The junction between the two halves of an animal's upper lip or nose.
      • ‘Superficial ulcers appear on the dorsum of the tongue, hard palate, and nasal philtrum.’
      • ‘Two dogs were presented with dermal arteritis of the nasal philtrum associated with repeated episodes of bleeding.’
      • ‘A midline groove called the philtrum divides the rhinarium into two, each half containing a nostril.’


Early 17th century (in sense ‘love potion’): Latin, from Greek philtron ‘love potion’.