adjective
Relating to, resembling, or situated on an axis
(anatomy) Belonging to the axis of the body, or to the axis of any appendage or organ
(botany) In the same direction as the axis, parallel to the axis.
(physical chemistry, organic chemistry) Oriented parallel to the axis running through the centre of a cyclohexane ring, as opposed to equatorial. See Axial bond.
noun
(ornithology) A flight feather that appears between the primaries and secondaries on some birds.
(dentistry) A plane parallel to the surface of a tooth.