| Definition/Meaning | Word/Phrase |
|---|
| angular distance above the horizon (especially of a celestial object) |
ALT
,
altitude
,
EL
,
elevation
|
| (physics) the angle that a magnetic needle makes with the plane of the horizon |
angle of dip
,
dip
,
inclination
,
magnetic dip
,
magnetic inclination
|
| navigational instrument based on a gyroscope; it artificially provides a simulated horizon for the pilot |
artificial horizon
,
flight indicator
,
gyro horizon
|
| (astronomy) the rising of a star above the horizon |
ascension
|
| position of aircraft or spacecraft relative to a frame of reference (the horizon or direction of motion) |
attitude
|
| immediately below the A-horizon; contains deposits of organic matter leached from surface soils |
B-horizon
,
B horizon
|
| beneath the B-horizon and above the bedrock; consisting of weathered rock |
C-horizon
,
C horizon
|
| great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth |
celestial horizon
,
horizon
|
| star that does not go below horizon |
circumpolar
|
| navigation by the horizon or landmarks, aircraft |
contact flight
,
contact flying
|
| flight by visual observation of horizon and landmarks |
contact flight
,
contact flying
|
| (astronomy) a heavenly body's highest celestial point above an observer's horizon |
culmination
|
| angular distance below the horizon (especially of a celestial object) |
depression
|
| position at right angles to the horizon |
erectness
,
uprightness
,
verticality
,
verticalness
|
| bright flashes of light near the horizon without thunder (especially on hot evenings); usually attributed to distant lightning that is reflected by clouds |
heat lightning
|
| level or parallel to horizon |
horizontal
|
| flat and parallel to horizon |
horizontal
|
| maximum parallax observed when the celestial body is at the horizon |
horizontal parallax
|
| quality of being parallel to the horizon |
horizontality
|
| instrument showing the angle that an aircraft makes with the horizon |
inclinometer
|
