philtrum

https://doi.org/10.1351/goldbook.11088
Groove in the midline of the upper lip below the nose.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 792 [Terms] [Paper]
Citation: 'philtrum' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.11088 RIS BibTex EndNote
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