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A unmaned machine that landed on mars. First thing it did was take a picture of itself... that way you know its truely american
mars rover
by chrisguy April 26, 2004
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Jun 23 Word of the Day
When a reply to a tweet gets more likes than the tweet it was replying to, usually indicating the unpopularity or stupidity of the original tweet
Damn you got 12 likes and his reply got 271 likes? He totally ratioed you bro
by FF29 July 06, 2020
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2
a device sent to mars, which will look at rocks and transmit data to earth, looking for signs of water. however, due to lack of planning, the mars rover is regrettably not waterproof.
So, uh, how about that mars rover, eh? That's um, goin to mars?
by Orion January 15, 2004
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3
Spacecraft sent to Mars that land and have the ability to move from their original site. Currently referring to Spirit and Opportunity, which were launched in 2003. Part of an ongoing program began in the mid 1990's that is currently planned out to around 2009.

May also refer to Pathfinder or Beagle 2.
"The Mars rovers are completely friggin justified, cost less than a few bombs, could possibly give hints to whether or not there is life elsewhere in the universe, and Bush didn't send them, idiots."
by Patteroast January 26, 2004
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4
The mars rover's lineage can be traced back to Earthling settlers on the planet Mars, who allowed their pet 'dogs' to cross-breed with the local wild-life. This eventually became known as the mars rover.
God-damn mars rover! Shat on the carpet and won't stop roaring and flailing his tentacles!
by bluntpencil2001 April 26, 2005
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5
A pure example of Much Ado About Nothing.
Hey, we could have sent a probe to Death Valley and saved some money!
by Zach G. January 15, 2004
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6
A person who is out of it and seems to always be spacing out is a mars rover.
John is such a mars rover he never hears what i say.
by abraham solomon January 14, 2004
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