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2.
1: Of or pertaining to the planet Mars or its hypothetical inhabitants
2: A being (presumably intelligent) originating from Mars. Rarely portrayed as peaceful, Martians always seem to desire the conquering or obliteration of Earth.
3: Of or pertaining to Mars, the Roman God of War, or to the planet bearing his name; martial
The antagonists in H.G. Well’s classic science-fiction novel The War of the Worlds
by DarthDeverell June 22, 2004
 
1.
Some one who sees the world on a multidimensional level,yet has the understanding that everything and everyone is interconnected like a single organism. Many martians smoke weed and/or use psychedelic drugs to further enhance their knowledge,creativity, and understanding of the universe.
Many artists are Martians
by iamlife May 31, 2009
 
3.
A person who sees through this world easily, as if he was from a superior planet (Mars - as a first thought). Some, "advanced" Martians can even get to the point to read people's thoughts. They are known to be getting on well with Jupitarians, as both species have the same view on all brain functions among humans.
Martian bass player (more popular as "del bosque")
by anhsujam September 17, 2006
 
4.
Those that inhabit my office, i.e. my coworkers.

Said Martians can be detected by listening for incessant laughter at boss's bad jokes, or at anything he says, or laughing at anything for that matter.

Creatures are also known to constantly smile and use exclamation points after every sentence. Every fucking sentence.
Me: You people are from another fucking planet.

Martians: GREAT!! HAHAHA!! LOL!!! : ) ;) THANKS!! HAVE A GREAT DAY!!!

Me: Seriously, what's wrong with you people?
by undacova brotha April 21, 2005
 
5.
1. a person from the planet Mars

2.an adjective used to describe something. Like "awesome" or "exotic" or "wicked" or "bitchin'".
1. Marvin the Martian is marching back to Mars.

2. I hear this city is really so Martian when it comes to the clubs!
by Starpunk October 22, 2006
 
6.
A human so odd or disgusting looking that they might be an alien.
Whoa, dude, look at that martian. Do you think it's male or female?
by Tater Gumfries September 21, 2009
 
7.
Another word for a male, as they clearly don't belong in the human race.
Oh my god, John is, like, the cutest martian I have ever seen!
by Lady Fauntleroy February 13, 2011