| abscissa |
the distance of a point from the vertical axis of a graph as measured parallel to the horizontal axis. (Cf. ordinate.) |
| adit |
an entrance or means of access, esp. a more or less horizontal passageway that leads into a mine. |
| air mass |
a body of air that covers a wide area and has little horizontal variation in temperature, pressure, or moisture. |
| angle1 |
the degree to which a line or plane slants with respect to a horizontal or vertical plane. [1/10 definitions] |
| autogiro |
an aircraft that is pulled forward by a conventional propeller and held up in the air by a large horizontal rotor mounted on top of the fuselage. |
| balance beam |
a long wooden horizontal beam raised about four feet above the floor, on which women gymnasts perform various balancing routines. [1/2 definitions] |
| barre |
a long horizontal handrail mounted in ballet studios as an aid for dancers performing various exercises. |
| boom2 |
a long horizontal pole that extends and positions the bottom of a sail. [1/5 definitions] |
| bulkhead |
an inclined, horizontal structure over the stairway to a cellar. [1/3 definitions] |
| cant2 |
a slanting line, edge, or surface, esp. one deviating from the horizontal or vertical; slope; incline. [1/5 definitions] |
| chambray |
a light, fine fabric woven with white horizontal threads and colored vertical threads. |
| chin |
in gymnastics, to pull (oneself) upward from a dangling position while grasping a horizontal bar until the chin is level with the bar. [1/3 definitions] |
| clapboard |
a long, narrow board, thicker along one horizontal edge than the other and used as an overlapped covering or siding for houses or buildings. [1/3 definitions] |
| common fraction |
a fraction represented by a numerator, above a horizontal or diagonal line, and a denominator below. (Cf. decimal fraction.) |
| compass |
an instrument for determining direction, esp. one with a horizontal magnetic needle that rotates freely until it points to the magnetic north. [1/9 definitions] |
| cornice |
in architecture, a decorative horizontal projection running near or along the upper edge of a wall or building; molding. [2/4 definitions] |
| cross |
a symbol or structure formed by a vertical line or pole intersecting a horizontal one. [1/16 definitions] |
| crossbar |
a bar that lies in a nonvertical position, such as a painted stripe or the horizontal bar used in pole vaulting. |
| cross hairs |
the two fine hairs, wires, or the like, one vertical and the other horizontal, that cross at right angles in an optical instrument such as a gunsight and that aid the viewer in aiming or focusing accurately. |
| crosstree |
either of a pair of horizontal bars attached to a ship's masthead in order to spread the shrouds. |
| crossword |
a puzzle in which the player must guess words from numbered clues and enter them in the correspondingly numbered series of vertical or horizontal squares; crossword puzzle. |