What does astrodome mean?
An astrodome is a transparent, typically bubble-shaped dome installed on an aircraft or spacecraft to allow observation of the sky. Its classic use was in aerial and celestial navigation: before satellite positioning, navigators aboard long-range bombers and airliners took star sightings through this clear dome to plot their position. The word also names large domed stadiums, most famously the Houston Astrodome, which opened in 1965 as the world's first fully enclosed, air-conditioned multi-purpose arena and earned the nickname the Eighth Wonder of the World. The term combines Greek-derived astro- ('star') with 'dome,' reflecting both its navigational purpose and its architectural form. Today the aviation sense is largely historical, while capitalized uses refer chiefly to landmark domed venues.
A transparent, bubble-shaped dome on an aircraft or spacecraft through which stars can be observed for celestial navigation or other observation.
"The navigator knelt beneath the astrodome, sextant in hand, taking a sighting on Polaris."
Most common in historical accounts of mid-20th-century aviation.
A large domed stadium or arena covered wholly or partly with transparent material, such as the Houston Astrodome.
"Baseball returned indoors when the Astros began playing in the Astrodome in 1965."
Often capitalized when referring to a specific named venue.
Regular plural formation; used when referring to multiple aircraft fittings or several domed venues.
"Several wartime bombers retained their original astrodomes."
Houston's Astrodome was nicknamed the 'Eighth Wonder of the World' when it opened in 1965 as the first fully air-conditioned, roof-covered sports stadium.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of astrodome
The word astrodome derives from the combining form astro-, from Greek astron meaning 'star', joined to 'dome', which entered English via Latin domus and later French. It arose in early-20th-century aviation terminology for the transparent dome used in celestial navigation, and was later applied architecturally when enclosed stadiums adopted similar transparent roofing, most prominently with Houston's Astrodome in 1965.
How astrodome is actually used
In aviation contexts, 'astrodome' refers specifically to the small transparent dome used by navigators for star sightings, common on mid-20th-century military and long-range aircraft. When capitalized as a proper noun, it usually denotes the famous Houston stadium.
Easily confused with astrodome
An observatory is a ground-based facility housing telescopes, while an astrodome is a small transparent dome fitted to an aircraft or a domed stadium.