RAS

Repulsive Asshole Syndrom- a syndrome common to PMS, yet taken up by the male species. Unlike PMS, RAS has the potential to last longer than one week and can affect a male individual on a daily basis. This syndrome is commonly manifested in short, hairy, North Shore, Greek boys who like to play with girl’s hearts and rip them out.

Roberta: Zev stopped texting me and ignored me at the party. He’s being a real jerk.
Jules: Don’t worry Roberta. This happened to me and Eli last week. Zev probably has a bad case of RAS.

by abcdefhijklmnop123456789 June 20, 2011

ra-ra

a nickname/code name for someone named Rasoul

"whos ra-ra?"

by MOKAdawgo May 9, 2009

RAS

An acronym for 'Random Ass Slut'

Guy 1: Did you hear that D-Bo pulled that RAS last night.
Guy 2: Too bad he got to Jake'd-up and puked on her

by nugz4life December 16, 2008

RAS

Acronym for Rough Anal Sex

That fat Irish bitch I fucked NYE loved RAS

by Skanky hose September 12, 2012

Ras

a name for someone who is rastafarian, or looks like it.

what up ras, how you doing mon

by Andy October 27, 2004

ra

1. Ra - Egyptian God of Sun.
2. RA - Real-Admiral.
3. RA - Research Assistant.
4. Ra - Royal Academy.
5. ra - radium.
6. ra - short form for ralph (student slang).

Ra - sunniest god!

He got RA at last.

The RA sucks at his researches.

by indie English June 22, 2011

ras

Of biological background, Ras refers to a monomeric, oncogenic guanine nucleotide binding protein (G-protein) associated with the cell membrane of essentially all eukaryotic cells. When activated by binding of a pro-proliferative extracellular ligand to its cellular receptor, Ras releases its guanosine diphosphate in exchange for guanosine triphosphate, thus activating it. It then propagates the proliferation activation signal through a MAP-kinase dependent pathway causing altered gene expression giving rise to the onset of the cell cycle.

Ras is fuckin cool (they're serious about this 20 letter minimum).

by Dr. Persaud, Cornell University August 4, 2004