The white semicircle at the base of the fingernail is called the lunula

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

The white, half-moon-shaped structure visible at the base of the human fingernail is anatomically identified as the lunula.

The analysis

The claim is a straightforward anatomical fact directly supported by multiple dermatology and anatomy references, which consistently describe the lunula as the white, half-moon-shaped area at the base of the nail plate.

Evidence for · 3

Nail anatomy.

Recorded source metadata

David de Berker. Nail anatomy.. 2013. https://doi.org/10.1016/j.clindermatol.2013.06.006

States that the distal part of the matrix, known as the lunula, is characterized by its half-moon shape and white appearance.

Source citation format

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More for · 2

The lunula.

Recorded source metadata

P R Cohen. The lunula.. 1996. https://doi.org/10.1016/s0190-9622(96)90269-8

Describes the lunula as the white, half-moon-shaped visible portion of the distal nail matrix extending beyond the proximal nailfold.

Source citation format

Red Lunula: A Reflection of Systemic Disease.

Recorded source metadata

Christopher G Karim, Robert A Schwartz. Red Lunula: A Reflection of Systemic Disease.. 2026. https://doi.org/10.1016/j.amjms.2026.07.008

Confirms that the lunula is the half-moon-shaped visible portion of the distal matrix and is typically white in appearance.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 7501 Aug 2026

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