Perpendicular to the vertical; parallel to the plane of the horizon; level, flat.
Relating to horizontal markets
Involving wines of the same vintages but from different wineries.
Having the two notes sound successively.
Relating to sexual intercourse.
A horizontal component of a structure.
Horizon.
A Tasmanian shrub or small tree whose main trunk tends to lean over and grow horizontally, Anodopetalum biglandulosum
Forward and/or backward, relative to some defined direction.
Relating to length, or to longitude.
Running in the direction of the long axis of a body.
Sampling data over time rather than merely once.
Any longitudinal piece, as in shipbuilding etc.
A railway sleeper lying parallel with the rail.