radially

Radially is an adverb describing something that extends, moves, or is arranged in relation to a center or from the center outward along a radius. It is often used in geometry to indicate directions that lie along a circle's radii or in expressions describing symmetry that is invariant under rotations about a central point.

In geometry and mathematics, radial coordinates describe a point by its distance r from a chosen origin and an angle θ. Radial symmetry refers to an object being unchanged under rotations around a central axis or point. Radial distance means the straight-line distance from the center to a point.

In physics and engineering, a radially directed force or velocity has a component directed away from or toward a center. Radial acceleration is the part of acceleration toward or away from the origin in polar coordinates; radial distribution describes how properties vary with distance from a center.

In astronomy and astrophysics, radial velocity is the component of an object's motion along the line of sight, measured via Doppler shift; it is used to study star motions, exoplanets, and galaxy dynamics.

In biology, radial symmetry is a body plan in which parts are arranged around a central axis, as in jellyfish or starfish. Radially growing structures or growth patterns expand outward from the center.

Radially outward is commonly used in physics and everyday language to describe movement away from a central point, such as a radially expanding shock wave or a radial layout of roads emanating from a central plaza.