Contraction of the greeting "What's up?" which is a contraction of "What is up?" If you're really pressed for time, greet someone with a "sup"?. In any case, the greeter is rhetorically asking you what is going on in your life. Roughly synonymous with hello but less hip.

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

The squished together slang word "wassup," also known as (wussup, wassssssssssssssup, wosssssssssssssup) and others originally stemming from the words " what is up " either meaning (how are you), (what are you doing) or even both at the same time.

Time went by, and the expression "what is up" became too long to say, type and text for the average lazy person. Therefore wassssssssup was invented.

Following this point, budweiser took this idea and made it their international slogan used on adverts, said by various strange frog people.

WASSSSSSSSSUP was then the word of the world and everyone, wherever they were, whether in an igloo in iceland, or in a whole in tikrit, (iraq), or in a cave in afghanistan, or even in some shitty trailer park in America, or Buckingham palace everyone could say "wassssssssup" without necesarilly understanding it.

It's long for 'sup.

Also part of the Buddweiser commercial fad.

Short phrase uttered as introduction. Usually directed towards individuals one knows, however can be used obligatorily for complete strangers in passing.

'Wussup' can also be stated non-verbally in the form of a short, verticle head jerk upward.

Slang for, "Hi, how are you?" It is so nineties.

1. What is up; greeting, not necessarilyy requiring a response.
2. What is up; how are you? Respond with "fine" or another state.