"Lunula" Natural Recordings by Native Speakers
The lunula is the crescent-shaped white patch on the bottom surface of the nail.
Lunitidal refers to the point on the Moon's surface that is directly under the observer's location on Earth. It is the point where the curvature of the Earth would intersect with the Moon's surface, if the Earth were a perfect sphere and the distance between the Earth and the Moon were constant. The lunitidal point is important in understanding the visibility of the Moon and its phases from Earth.
The word "lunulate" refers to having a moon-shaped or crescent shape, often used to describe something that resembles a crescent moon, such as a crescent-shaped mark or a crescent-shaped bone.