altitudes

Heights above sea

Altitudes is the plural of altitude, meaning height above a reference point, usually sea level or the ground.

Aircraft fly at various altitudes; mountain climbers acclimate to high altitudes.

The word often implies significant elevation: At these altitudes, the air is thin and breathing becomes difficult.

In geometry, an altitude is the perpendicular distance from a base to the opposite vertex.

aviation

cruising

Moving at relaxed pace

descent · stratosphere · troposphere · cockpit · barometric · pressurization · aircraft · aviation · aeronautics · approach

elevation

summit

Peak or diplomatic gathering

elevation · mountaintop · foothill · escarpment · mesa · butte · knoll · crag · pinnacle · hillock

figurative

heights

Vertical measurements or summits

ambitions · pinnacle · zenith · apex · summit · peak · soaring · rarefied · dizzying · vertiginous

mountaineering

basecamp

Expedition's operational center

alpinist · hypoxia · frostbite · exposure · ascent · descent · porter · Himalaya · Andes · Alps

physiology

acclimatization

Adjusting to new conditions

dehydration · respiration · hemoglobin · adaptation · exertion · fatigue · nausea · headache · pulmonary · cerebral

Categories
Opposites
vertical position

altitudesdepths

Lowest or innermost regions

nadir · below sea level · underground · sea level · abysses

elevation magnitude

altitudeslowlands

Low-elevation flat terrain

flatlands · sea level · plains · valleys · bottomlands

Phrases
Family

altitude, high-altitude, altitude sickness

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G