altitude

describing a location far above sea level

describing a location not far above sea level

the specific altitude at which an aircraft travels for the majority of a flight

describing a location far above sea level

describing a location very far above sea level

the upper limit of an aircraft's flight path or an object's height

the lower limit of an aircraft's flight path or an object's height

a medical condition caused by exposure to low oxygen pressure at high altitudes

physical training at high altitude to improve athletic performance

used to specify the location in terms of height

used to specify a particular numerical value of height

to operate an aircraft at a specific altitude

to keep an aircraft at a steady, specific altitude

to increase height, to fly higher

to ascend to a particular altitude

to decrease height, to fly lower

to operate an aircraft at a steady, specific altitude

to ascend to a particular altitude, often used for smoke, clouds, etc.