Meanings
- uncountableanatomyA triangular area of the face encompassing the lips and nose.
Before all these sutures are tied, the mucous membranes of the edges of the nasolabial triangle are closed.
1988, John M. Loré, An Atlas of Head and Neck Surgery, page 4003 more examples
For that reason they may appear frequently in syntropism with the sharply demarcated malar flush and anemic nasolabial triangle, even without scarlet fever.
1933, The Year Book of Pediatrics, volume 1940Hyperemia of the face, which stands out during the first few days of the illness (white nasolabial triangle), is changed to a peculiar paleness of the face that looks like a mask.
1959, U.S. Surgeon General's Office, Translations from the Soviet Literature on Hemorrhagic Fever: 1944–1951, page 2This is especially likely to occur in the presence of infection in the upper lip, lower part of the nose, and adjoining nasolabial triangle.
2009, Melvin A. Shiffman, editor, Autologous Fat Transfer: Art, Science, and Clinical Practice, Springer, page 422Synonyms: danger triangle, danger triangle of the face, triangle of death
Synonyms & antonyms
nounA triangular area of the face encompassing the lips and nose.
Cite this entry
nasolabial triangle. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/nasolabial%20triangle
“nasolabial triangle.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/nasolabial%20triangle. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “nasolabial triangle,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/nasolabial%20triangle.
Source: nasolabial triangle on Wiktionary, CC BY-SA 4.0.