1The vertical groove between the base of the nose and the border of the upper lip.
- A 37-year-old woman presented for evaluation of a scar on her philtrum.
- Nothing makes a man more adorable than a well-shaped philtrum.
- Nevertheless, early correction may be indicated because the prolabium usually contains more than enough tissue to create a philtrum of normal size.
1.1The 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'.
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