The head-like mouthpart apparatus of a tick, including the palpi, mandibles, and hypostome.
A small protuberance on a bone which articulates into another bone to form a ball-and-socket joint.
A densely clustered inflorescence composed of a large number of individual florets arising from a platform-like base.
The highest surface on the skull; the crown of the head.
One of the elements of a graph joined or not by edges to other vertices.
A point in 3D space, usually given in terms of its Cartesian coordinates.
The point where the surface of a lens crosses the optical axis.
An interaction point.
The point at which an axis meets a curve or surface.
The common point of the two rays that form an angle.
A sharp downward point opposite a crotch, as in the letters "V" and "W" but not "Y".
The point where the prime vertical meets the ecliptic in the western hemisphere of a natal chart.
A point on the curve with a local minimum or maximum of curvature.
The highest point, top or apex of something.