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A symbol in the greek alphabet.

In physics, represents nuclear half life, or the wavelength of a ray/photon/light.

Used in the Half-Life games as the symbol for the rebellion. Also represents the game in general.
"C (The Speed of Light) equals Lambda (wavelength) times F (frequency)."

"Follow the lambdas spray-painted on the walls to a secret weapons cache."
by Baelnoren June 09, 2008
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Apr 27 Word of the Day
A horoscope so bad that it strikes fear into the heart of the reader, rendering them unable take action or make a decision on anything or to even leave the house. This is caused by a paralyzing fear that those actions or decisions may cause the predictions to come true.
After reading "There is a lot of uncertainty around financial transactions and investments right now, and the wrong decision could result in dire consequences" in his daily Horrorscope, Edward climbed back into bed, pulled the sheets over his head and remained there for the rest of the day.

Edward only had enough gas in his car to get to the gas station but was not sure if he had enough money in his account to pay for gas. His cell phone service had been cut off because his payments were in arrears, and since the only way he could be sure he had enough money (to pay for gas) would be to call the bank, he felt it best to hide in bed and hope his horoscope for tomorrow was more positive.
by Edward Albee Deavers April 28, 2011
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2
A group of men, usually of Asian decent, with abnormally large penii, found grouped together at your local Asian-American gatherings, picking up all the women and making other men envious of their penii.
"Wow, look at those Lambdas, they have abnormally large penii."

"Ow, that Lambda made me bleed last night."

"That Lambda's thing was so big, I couldn't put my mouth around it."
by small asian woman October 14, 2007
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3
The radioactive decay constant. Symbol for nuclear half life.

Like the rainbow, the lambda is yet another cool symbol stolen by the gay community.
guy: Hey did you see my cool counterstrike sticker I put on my car?!? Its a lambda!
friend: HAHAHAHA!!! YOUR GAY! ROFL!!1
by P6 July 07, 2006
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4
term used to describe the gay, bisexual, lesbian, transgendered, and progressive subculture; term used to describe the gay civil rights movement.
I am a member of the lambda community.
by Simba dlp November 11, 2010
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5
Lambda refers to the common household pet. This pet is never to be named anything other than lambda. Lambdas can be cross bred between other animals such as unicorns. This particular breed is called a lambda corn. Other common crossbreeds are pamela anderson + lambda= pamlambda anderson. Lambdas are sold at a price of 300 yen or 600 yen when it is buy one lambda get on free.
Have you got your lambda yet?
Everyone is doing it!
by R182 January 08, 2008
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