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.
by Dr. Persaud, Cornell University August 05, 2004
by datrasgirl May 22, 2011
Phrase usually used as an insult against young privately-educated upper-middle class Britons to mock their snobbish, privileged lifestyle and attitudes.
by Anonymous October 22, 2003
by Bigbootyjess February 12, 2017
The type of upper class english youth who talks with an affected accent, knows people who know people who know prince harry (and call him 'hazza'), who calls his mother 'mummy' even at the age of 23 and wears polo shirts and rugby shirts with the collars popped. So called because of the fact that when a ra ra laughs it sounds like they're shouting 'ra ra ra' to each other. Usually nice enough, if a bit pretentious. May have a swimming pool and a tendency to wear bright pink shirts. Might look gay, but usually just metrosexual.
Synonyms: ra boy, hooray henry
Synonyms: ra boy, hooray henry
"I was at durham university the other day, and it's filled with ra ras there'
'is he gay?' 'no, metro. He's a real ra ra'
'is he gay?' 'no, metro. He's a real ra ra'
by Sabazius July 14, 2008
A phrase used to express great annoyance at a particular subject. Used to save time on explaining yourself.
by Gibra October 21, 2007
by cj262 September 29, 2009