▸ adjective
1 neither parallel nor at right angles to a specified or implied line; slanting:
we sat on the settee oblique to the fireplace.
▪ Geometry (of a line, plane figure, or surface) inclined at other than a right angle.
▪ Geometry (of an angle) acute or obtuse.
▪ Geometry (of a cone, cylinder, etc.) with an axis not perpendicular to the plane of its base.
▪ Anatomy (especially of a muscle) neither parallel nor perpendicular to the long axis of a body or limb:
an oblique abdominal muscle.
– ORIGIN late Middle English: from Latin obliquus.