hordeum
- n annual to perennial grasses of temperate northern hemisphere and South America: barley
hordeum jubatum
- n barley grown for its highly ornamental flower heads with delicate long silky awns; North America and northeastern Asia
hordeum murinum
- n European annual grass often found as a weed in waste ground especially along roadsides and hedgerows
hordeum pusillum
- n annual barley native to western North America and widespread in southern United States and tropical America
hordeum vulgare
- n grass yielding grain used for breakfast food and animal feed and in malt beverages
horehound
- n any of various aromatic herbs of the genus Marrubium
- n a candy that is flavored with an extract of the horehound plant
horizon
- n the line at which the sky and Earth appear to meet
- n the range of interest or activity that can be anticipated
It is beyond the horizon of present knowledge - n a specific layer or stratum of soil or subsoil in a vertical cross section of land
- n the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth
horizontal bar
- n gymnastic apparatus consisting of a bar supported in a horizontal position by uprights at both ends
horizontal combination
- n absorption into a single firm of several firms involved in the same level of production and sharing resources at that level
horizontal integration
- n absorption into a single firm of several firms involved in the same level of production and sharing resources at that level
horizontal parallax
- n the maximum parallax observed when the celestial body is at the horizon
horizontal section
- n a mechanical drawing of an object as if made by a plane cutting through it horizontally
horizontal stabiliser
- n the horizontal airfoil of an aircraft's tail assembly that is fixed and to which the elevator is hinged
horizontal stabilizer
- n the horizontal airfoil of an aircraft's tail assembly that is fixed and to which the elevator is hinged