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of, pertaining to, characterized by, or forming an axis:
an axial relationship.
situated in or on an axis.
Contemporary Examples

Because there is the luminous ensemble of Sigmar Polke entitled axial Ages.
Treasures From the Pinault Collection Bernard-Henri Lévy June 11, 2009

Historical Examples

He called them axial processes, the only name which appears to have been suggested thus far.
The Appendages, Anatomy, and Relationships of Trilobites Percy Edward Raymond

The storm was probably caused by the axial rotation of Wandl.
Wandl the Invader Raymond King Cummings

For every voluntary act of sight there are two adjustments of the eyes, namely, focal and axial.
Visual Illusions Matthew Luckiesh

Axellipsis is a peculiar genus differing from Cenellipsis in an axial rod, which corresponds to the minor or equatorial axis.
Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) Ernst Haeckel

Their body is always composed of two chief organs, the axial stem and the lateral leaves.
The Wonders of Life Ernst Haeckel

These are the “axial” and “equatorial” positions of Faraday.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 3 Various

These vertebrae are developed round an unsegmented rod, the notochord, which forms the axial support of the embryo.
The Vertebrate Skeleton Sidney H. Reynolds

There is considerable variation in the width of the axial lobe.
The Appendages, Anatomy, and Relationships of Trilobites Percy Edward Raymond

It may be noted that in all these genera the axial lobe of the pygidium is either short or narrow.
The Appendages, Anatomy, and Relationships of Trilobites Percy Edward Raymond

adjective
relating to, forming, or characteristic of an axis
situated in, on, or along an axis
adj.

“pertaining to an axis,” by 1825, from axis + -al (1). Related: Axially.

axial ax·i·al (āk’sē-əl)
adj.

Relating to or characterized by an axis; axile.

Relating to or situated in the head and trunk region of the body.

Relating to or parallel with the long axis of a tooth.

axis
(āk’sĭs)
Plural axes (āk’sēz’)

An imaginary line around which an object rotates. In a rotating sphere, such as the Earth and other planets, the two ends of the axis are called poles. The 23.45° tilt of the Earth’s axis with respect to the plane of its orbit around the Sun causes the Northern and Southern Hemispheres to point toward and away from the Sun at different times of the year, creating seasonal patterns of weather and climate. Other planets in the solar system have widely varying tilts to their axes, ranging from near 0° for Mercury to 177° for Venus.

Mathematics

A line, ray, or line segment with respect to which a figure or object is symmetrical.

A reference line from which distances or angles are measured in a coordinate system, such as the x-axis and y-axis in the Cartesian coordinate system.

Anatomy The second cervical vertebra, which serves as a pivot for the head.

Botany The main stem or central part of a plant or plant part, about which other plant parts, such as branches or leaflets, are arranged.

axial adjective